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15 """A set of functions performing routine administrative I/O tasks."""
16
17 import contextlib
18 import itertools
19 import logging
20 import os
21 import re
22 import signal
23 import subprocess
24 import sys
25 import StringIO
26 import sys
27 import optparse
28 import time
29 import shutil
30 import traceback
31 import gzip as ziplib
32 from distutils.version import LooseVersion, StrictVersion
33
34 try:
35
36 import madgraph
37 except Exception, error:
38
39 import internal
40 from internal import MadGraph5Error, InvalidCmd
41 import internal.files as files
42 MADEVENT = True
43 else:
44 from madgraph import MadGraph5Error, InvalidCmd
45 import madgraph.iolibs.files as files
46 MADEVENT = False
47
48
49 logger = logging.getLogger('cmdprint.ext_program')
50 logger_stderr = logging.getLogger('madevent.misc')
51 pjoin = os.path.join
57 """Parse a newline separated list of "param=value" as a dictionnary
58 """
59
60 info_dict = {}
61 pattern = re.compile("(?P<name>\w*)\s*=\s*(?P<value>.*)",
62 re.IGNORECASE | re.VERBOSE)
63 for entry in fsock:
64 entry = entry.strip()
65 if len(entry) == 0: continue
66 m = pattern.match(entry)
67 if m is not None:
68 info_dict[m.group('name')] = m.group('value')
69 else:
70 raise IOError, "String %s is not a valid info string" % entry
71
72 return info_dict
73
74
75 -def glob(name, path=''):
76 """call to glob.glob with automatic security on path"""
77 import glob as glob_module
78 path = re.sub('(?P<name>\?|\*|\[|\])', '[\g<name>]', path)
79 return glob_module.glob(pjoin(path, name))
80
81
82
83
84 -def mute_logger(names=['madgraph','ALOHA','cmdprint','madevent'], levels=[50,50,50,50]):
85 """change the logger level and restore those at their initial value at the
86 end of the function decorated."""
87 def control_logger(f):
88 def restore_old_levels(names, levels):
89 for name, level in zip(names, levels):
90 log_module = logging.getLogger(name)
91 log_module.setLevel(level)
92
93 def f_with_no_logger(self, *args, **opt):
94 old_levels = []
95 for name, level in zip(names, levels):
96 log_module = logging.getLogger(name)
97 old_levels.append(log_module.level)
98 log_module.setLevel(level)
99 try:
100 out = f(self, *args, **opt)
101 restore_old_levels(names, old_levels)
102 return out
103 except:
104 restore_old_levels(names, old_levels)
105 raise
106
107 return f_with_no_logger
108 return control_logger
109
110 PACKAGE_INFO = {}
115 """Returns the current version information of the MadGraph5_aMC@NLO package,
116 as written in the VERSION text file. If the file cannot be found,
117 a dictionary with empty values is returned. As an option, an info
118 string can be passed to be read instead of the file content.
119 """
120 global PACKAGE_INFO
121
122 if info_str:
123 info_dict = parse_info_str(StringIO.StringIO(info_str))
124
125 elif MADEVENT:
126 info_dict ={}
127 info_dict['version'] = open(pjoin(internal.__path__[0],'..','..','MGMEVersion.txt')).read().strip()
128 info_dict['date'] = '20xx-xx-xx'
129 else:
130 if PACKAGE_INFO:
131 return PACKAGE_INFO
132 info_dict = files.read_from_file(os.path.join(madgraph.__path__[0],
133 "VERSION"),
134 parse_info_str,
135 print_error=False)
136 PACKAGE_INFO = info_dict
137
138 return info_dict
139
144 """Returns the present time info for use in MG5 command history header.
145 """
146
147 creation_time = time.asctime()
148 time_info = {'time': creation_time,
149 'fill': ' ' * (26 - len(creation_time))}
150
151 return time_info
152
158 """ Returns None if compatible or, it not compatible, a string explaining
159 why it is so."""
160
161 ma5_version = None
162 try:
163 for line in open(pjoin(ma5path,'version.txt'),'r').read().split('\n'):
164 if line.startswith('MA5 version :'):
165 ma5_version=LooseVersion(line[13:].strip())
166 break
167 except:
168 ma5_version = None
169
170 if ma5_version is None:
171 reason = "No MadAnalysis5 version number could be read from the path supplied '%s'."%ma5path
172 reason += "\nThe specified version of MadAnalysis5 will not be active in your session."
173 return reason
174
175 mg5_version = None
176 try:
177 info = get_pkg_info()
178 mg5_version = LooseVersion(info['version'])
179 except:
180 mg5_version = None
181
182
183 if not mg5_version:
184 return None
185
186 if mg5_version < LooseVersion("2.6.1") and ma5_version >= LooseVersion("1.6.32"):
187 reason = "This active MG5aMC version is too old (v%s) for your selected version of MadAnalysis5 (v%s)"%(mg5_version,ma5_version)
188 reason += "\nUpgrade MG5aMC or re-install MA5 from within MG5aMC to fix this compatibility issue."
189 reason += "\nThe specified version of MadAnalysis5 will not be active in your session."
190 return reason
191
192 if mg5_version >= LooseVersion("2.6.1") and ma5_version < LooseVersion("1.6.32"):
193 reason = "Your selected version of MadAnalysis5 (v%s) is too old for this active version of MG5aMC (v%s)."%(ma5_version,mg5_version)
194 reason += "\nRe-install MA5 from within MG5aMC to fix this compatibility issue."
195 reason += "\nThe specified version of MadAnalysis5 will not be active in your session."
196 return reason
197
198 return None
199
204 """Browse the subdirectories of the path 'start_path' and returns the first
205 one found which contains at least one file ending with the string extension
206 given in argument."""
207
208 if not os.path.isdir(start_path):
209 return None
210 subdirs=[pjoin(start_path,dir) for dir in os.listdir(start_path)]
211 for subdir in subdirs:
212 if os.path.isfile(subdir):
213 if os.path.basename(subdir).endswith(extension):
214 return start_path
215 elif os.path.isdir(subdir):
216 path = find_includes_path(subdir, extension)
217 if path:
218 return path
219 return None
220
226 """ Get whether ninja supports quad prec in different ways"""
227
228
229 ninja_config = os.path.abspath(pjoin(
230 ninja_lib_path,os.pardir,'bin','ninja-config'))
231 if os.path.exists(ninja_config):
232 try:
233 p = Popen([ninja_config, '-quadsupport'], stdout=subprocess.PIPE,
234 stderr=subprocess.PIPE)
235 output, error = p.communicate()
236 return 'TRUE' in output.upper()
237 except Exception:
238 pass
239
240
241
242 return False
243
244
245
246
247 -def which(program):
248 def is_exe(fpath):
249 return os.path.exists(fpath) and os.access(\
250 os.path.realpath(fpath), os.X_OK)
251
252 if not program:
253 return None
254
255 fpath, fname = os.path.split(program)
256 if fpath:
257 if is_exe(program):
258 return program
259 else:
260 for path in os.environ["PATH"].split(os.pathsep):
261 exe_file = os.path.join(path, program)
262 if is_exe(exe_file):
263 return exe_file
264 return None
265
281
287 """ Make sure to turn off some dependency of MG5aMC. """
288
289 def tell(msg):
290 if log == 'stdout':
291 print msg
292 elif callable(log):
293 log(msg)
294
295
296 if dependency in ['pjfry','golem','samurai','ninja','collier']:
297 if cmd.options[dependency] not in ['None',None,'']:
298 tell("Deactivating MG5_aMC dependency '%s'"%dependency)
299 cmd.options[dependency] = None
300
302 """ Checks whether the specfieid MG dependency can be activated if it was
303 not turned off in MG5 options."""
304
305 def tell(msg):
306 if log == 'stdout':
307 print msg
308 elif callable(log):
309 log(msg)
310
311 if cmd is None:
312 cmd = MGCmd.MasterCmd()
313
314 if dependency=='pjfry':
315 if cmd.options['pjfry'] in ['None',None,''] or \
316 (cmd.options['pjfry'] == 'auto' and which_lib('libpjfry.a') is None) or\
317 which_lib(pjoin(cmd.options['pjfry'],'libpjfry.a')) is None:
318 tell("Installing PJFry...")
319 cmd.do_install('PJFry')
320
321 if dependency=='golem':
322 if cmd.options['golem'] in ['None',None,''] or\
323 (cmd.options['golem'] == 'auto' and which_lib('libgolem.a') is None) or\
324 which_lib(pjoin(cmd.options['golem'],'libgolem.a')) is None:
325 tell("Installing Golem95...")
326 cmd.do_install('Golem95')
327
328 if dependency=='samurai':
329 raise MadGraph5Error, 'Samurai cannot yet be automatically installed.'
330
331 if dependency=='ninja':
332 if cmd.options['ninja'] in ['None',None,''] or\
333 (cmd.options['ninja'] == './HEPTools/lib' and not MG5dir is None and\
334 which_lib(pjoin(MG5dir,cmd.options['ninja'],'libninja.a')) is None):
335 tell("Installing ninja...")
336 cmd.do_install('ninja')
337
338 if dependency=='collier':
339 if cmd.options['collier'] in ['None',None,''] or\
340 (cmd.options['collier'] == 'auto' and which_lib('libcollier.a') is None) or\
341 which_lib(pjoin(cmd.options['collier'],'libcollier.a')) is None:
342 tell("Installing COLLIER...")
343 cmd.do_install('collier')
344
349 def is_lib(fpath):
350 return os.path.exists(fpath) and os.access(fpath, os.R_OK)
351
352 if not lib:
353 return None
354
355 fpath, fname = os.path.split(lib)
356 if fpath:
357 if is_lib(lib):
358 return lib
359 else:
360 locations = sum([os.environ[env_path].split(os.pathsep) for env_path in
361 ["DYLD_LIBRARY_PATH","LD_LIBRARY_PATH","LIBRARY_PATH","PATH"]
362 if env_path in os.environ],[])
363 for path in locations:
364 lib_file = os.path.join(path, lib)
365 if is_lib(lib_file):
366 return lib_file
367 return None
368
373 """ Return nice information on the current variable """
374
375
376 info = [('type',type(var)),('str', var)]
377 if hasattr(var, 'func_doc'):
378 info.append( ('DOC', var.func_doc) )
379 if hasattr(var, '__doc__'):
380 info.append( ('DOC', var.__doc__) )
381 if hasattr(var, '__dict__'):
382 info.append( ('ATTRIBUTE', var.__dict__.keys() ))
383
384 spaces = ' ' * nb_space
385
386 outstr=''
387 for name, value in info:
388 outstr += '%s%3s : %s\n' % (spaces,name, value)
389
390 return outstr
391
392
393
394
395 wait_once = False
397
398 def deco_retry(f):
399 def deco_f_retry(*args, **opt):
400 for i in range(nb_try):
401 try:
402 return f(*args, **opt)
403 except KeyboardInterrupt:
404 raise
405 except Exception, error:
406 global wait_once
407 if not wait_once:
408 text = """Start waiting for update. (more info in debug mode)"""
409 logger.info(text)
410 logger_stderr.debug('fail to do %s function with %s args. %s try on a max of %s (%s waiting time)' %
411 (str(f), ', '.join([str(a) for a in args]), i+1, nb_try, sleep * (i+1)))
412 logger_stderr.debug('error is %s' % str(error))
413 if __debug__: logger_stderr.debug('and occurred at :'+traceback.format_exc())
414 wait_once = True
415 time.sleep(sleep * (i+1))
416
417 if __debug__:
418 raise
419 raise error.__class__, '[Fail %i times] \n %s ' % (i+1, error)
420 return deco_f_retry
421 return deco_retry
422
427 """return a name of the type xxxx[A-B]yyy
428 where xxx and yyy are the common part between the two names.
429 """
430
431
432 base = [first[i] for i in range(len(first)) if first[:i+1] == last[:i+1]]
433
434 while base and base[0].isdigit():
435 base = base[1:]
436
437 end = [first[-(i+1)] for i in range(len(first)) if first[-(i+1):] == last[-(i+1):]]
438
439 while end and end[-1].isdigit():
440 end = end[:-1]
441 end.reverse()
442
443 base, end = ''.join(base), ''.join(end)
444 if end:
445 name = "%s[%s-%s]%s" % (base, first[len(base):-len(end)], last[len(base):-len(end)],end)
446 else:
447 name = "%s[%s-%s]%s" % (base, first[len(base):], last[len(base):],end)
448 return name
449
450
451
452
453 -def compile(arg=[], cwd=None, mode='fortran', job_specs = True, nb_core=1 ,**opt):
454 """compile a given directory"""
455
456 if 'nocompile' in opt:
457 if opt['nocompile'] == True:
458 if not arg:
459 return
460 if cwd:
461 executable = pjoin(cwd, arg[0])
462 else:
463 executable = arg[0]
464 if os.path.exists(executable):
465 return
466 del opt['nocompile']
467
468 cmd = ['make']
469 try:
470 if nb_core > 1:
471 cmd.append('-j%s' % nb_core)
472 cmd += arg
473 p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
474 stderr=subprocess.STDOUT, cwd=cwd, **opt)
475 (out, err) = p.communicate()
476 except OSError, error:
477 if cwd and not os.path.exists(cwd):
478 raise OSError, 'Directory %s doesn\'t exists. Impossible to run make' % cwd
479 else:
480 error_text = "Impossible to compile %s directory\n" % cwd
481 error_text += "Trying to launch make command returns:\n"
482 error_text += " " + str(error) + "\n"
483 error_text += "In general this means that your computer is not able to compile."
484 if sys.platform == "darwin":
485 error_text += "Note that MacOSX doesn\'t have gmake/gfortan install by default.\n"
486 error_text += "Xcode3 contains those required programs"
487 raise MadGraph5Error, error_text
488
489 if p.returncode:
490
491 if not cwd:
492 cwd = os.getcwd()
493 all_file = [f.lower() for f in os.listdir(cwd)]
494 if 'makefile' not in all_file and '-f' not in arg:
495 raise OSError, 'no makefile present in %s' % os.path.realpath(cwd)
496
497 if mode == 'fortran' and not (which('g77') or which('gfortran')):
498 error_msg = 'A fortran compiler (g77 or gfortran) is required to create this output.\n'
499 error_msg += 'Please install g77 or gfortran on your computer and retry.'
500 raise MadGraph5Error, error_msg
501 elif mode == 'cpp' and not which('g++'):
502 error_msg ='A C++ compiler (g++) is required to create this output.\n'
503 error_msg += 'Please install g++ (which is part of the gcc package) on your computer and retry.'
504 raise MadGraph5Error, error_msg
505
506
507 if any(tag.upper() in out.upper() for tag in ['real(kind=16)','real*16',
508 'complex*32']) and mode == 'fortran' and not \
509 ''.join(get_gfortran_version().split('.')) >= '46':
510 if not which('gfortran'):
511 raise MadGraph5Error, 'The fortran compiler gfortran v4.6 or later '+\
512 'is required to compile %s.\nPlease install it and retry.'%cwd
513 else:
514 logger_stderr.error('ERROR, you could not compile %s because'%cwd+\
515 ' your version of gfortran is older than 4.6. MadGraph5_aMC@NLO will carry on,'+\
516 ' but will not be able to compile an executable.')
517 return p.returncode
518
519 error_text = 'A compilation Error occurs '
520 if cwd:
521 error_text += 'when trying to compile %s.\n' % cwd
522 error_text += 'The compilation fails with the following output message:\n'
523 error_text += ' '+out.replace('\n','\n ')+'\n'
524 error_text += 'Please try to fix this compilations issue and retry.\n'
525 error_text += 'Help might be found at https://answers.launchpad.net/mg5amcnlo.\n'
526 error_text += 'If you think that this is a bug, you can report this at https://bugs.launchpad.net/mg5amcnlo'
527 raise MadGraph5Error, error_text
528 return p.returncode
529
531 """ Returns the gfortran version as a string.
532 Returns '0' if it failed."""
533 try:
534 p = Popen([compiler, '-dumpversion'], stdout=subprocess.PIPE,
535 stderr=subprocess.PIPE)
536 output, error = p.communicate()
537 version_finder=re.compile(r"(?P<version>(\d.)*\d)")
538 version = version_finder.search(output).group('version')
539 return version
540 except Exception:
541 return '0'
542
543 -def mod_compilator(directory, new='gfortran', current=None, compiler_type='gfortran'):
544
545 if type(directory)!=list:
546 directory=[directory]
547
548
549 file_to_change=find_makefile_in_dir(directory)
550 if compiler_type == 'gfortran':
551 comp_re = re.compile('^(\s*)FC\s*=\s*(.+)\s*$')
552 var = 'FC'
553 elif compiler_type == 'cpp':
554 comp_re = re.compile('^(\s*)CXX\s*=\s*(.+)\s*$')
555 var = 'CXX'
556 else:
557 MadGraph5Error, 'Unknown compiler type: %s' % compiler_type
558
559 mod = False
560 for name in file_to_change:
561 lines = open(name,'r').read().split('\n')
562 for iline, line in enumerate(lines):
563 result = comp_re.match(line)
564 if result:
565 if new != result.group(2) and '$' not in result.group(2):
566 mod = True
567 lines[iline] = result.group(1) + var + "=" + new
568 elif compiler_type == 'gfortran' and line.startswith('DEFAULT_F_COMPILER'):
569 lines[iline] = "DEFAULT_F_COMPILER = %s" % new
570 elif compiler_type == 'cpp' and line.startswith('DEFAULT_CPP_COMPILER'):
571 lines[iline] = "DEFAULT_CPP_COMPILER = %s" % new
572
573 if mod:
574 open(name,'w').write('\n'.join(lines))
575
576 mod = False
577
579 """Check whether pid exists in the current process table.
580 UNIX only.
581 https://stackoverflow.com/questions/568271/how-to-check-if-there-exists-a-process-with-a-given-pid-in-python
582 """
583 import errno
584
585 if pid < 0:
586 return False
587 if pid == 0:
588
589
590
591
592 raise ValueError('invalid PID 0')
593 try:
594 os.kill(pid, 0)
595 except OSError as err:
596 if err.errno == errno.ESRCH:
597
598 return False
599 elif err.errno == errno.EPERM:
600
601 return True
602 else:
603
604
605 raise
606 else:
607 return True
608
613 """mute_logger (designed to work as with statement),
614 files allow to redirect the output of the log to a given file.
615 """
616
617 - def __init__(self, names, levels, files=None, **opt):
618 assert isinstance(names, list)
619 assert isinstance(names, list)
620
621 self.names = names
622 self.levels = levels
623 if isinstance(files, list):
624 self.files = files
625 else:
626 self.files = [files] * len(names)
627 self.logger_saved_info = {}
628 self.opts = opt
629
640
641 - def __exit__(self, ctype, value, traceback ):
652
654 """ Setup the logger by redirecting them all to logfiles in tmp """
655
656 logs = full_logname.split('.')
657 lognames = [ '.'.join(logs[:(len(logs)-i)]) for i in\
658 range(len(full_logname.split('.')))]
659 for logname in lognames:
660 try:
661 os.remove(path)
662 except Exception, error:
663 pass
664 my_logger = logging.getLogger(logname)
665 hdlr = logging.FileHandler(path)
666
667
668 self.logger_saved_info[logname] = [hdlr, my_logger.handlers]
669
670
671 for old_hdlr in list(my_logger.handlers):
672 my_logger.removeHandler(old_hdlr)
673 my_logger.addHandler(hdlr)
674
675 my_logger.debug('Log of %s' % logname)
676
678 """ Setup the logger by redirecting them all to logfiles in tmp """
679
680 logs = full_logname.split('.')
681 lognames = [ '.'.join(logs[:(len(logs)-i)]) for i in\
682 range(len(full_logname.split('.')))]
683 for logname in lognames:
684 if path:
685 try:
686 os.remove(path)
687 except Exception, error:
688 pass
689 my_logger = logging.getLogger(logname)
690 if logname in self.logger_saved_info:
691 my_logger.removeHandler(self.logger_saved_info[logname][0])
692 for old_hdlr in self.logger_saved_info[logname][1]:
693 my_logger.addHandler(old_hdlr)
694 else:
695 my_logger.setLevel(level)
696
697
698
699
700 nb_open =0
703 """
704 A context manager to temporarily redirect stdout or stderr
705
706 e.g.:
707
708
709 with stdchannel_redirected(sys.stderr, os.devnull):
710 if compiler.has_function('clock_gettime', libraries=['rt']):
711 libraries.append('rt')
712 """
713
714 try:
715 oldstdchannel = os.dup(stdchannel.fileno())
716 dest_file = open(dest_filename, 'w')
717 os.dup2(dest_file.fileno(), stdchannel.fileno())
718 yield
719 finally:
720 if oldstdchannel is not None:
721 os.dup2(oldstdchannel, stdchannel.fileno())
722 os.close(oldstdchannel)
723 if dest_file is not None:
724 dest_file.close()
725
727 '''
728 return the number of open file descriptors for current process
729
730 .. warning: will only work on UNIX-like os-es.
731 '''
732 import subprocess
733 import os
734
735 pid = os.getpid()
736 procs = subprocess.check_output(
737 [ "lsof", '-w', '-Ff', "-p", str( pid ) ] )
738 nprocs = filter(
739 lambda s: s and s[ 0 ] == 'f' and s[1: ].isdigit(),
740 procs.split( '\n' ) )
741
742 return nprocs
743
745 """ Detects whether the specified C++ compiler is clang."""
746
747 try:
748 p = Popen([cpp_compiler, '--version'], stdout=subprocess.PIPE,
749 stderr=subprocess.PIPE)
750 output, error = p.communicate()
751 except Exception, error:
752
753 return False
754 return 'LLVM' in output
755
757 """ Detects if the specified c++ compiler will normally link against the C++
758 standard library -lc++ or -libstdc++."""
759
760 is_clang = detect_if_cpp_compiler_is_clang(cpp_compiler)
761 if is_clang:
762 try:
763 import platform
764 v, _,_ = platform.mac_ver()
765 if not v:
766
767
768 return '-lc++'
769 else:
770 v = float(v.rsplit('.')[1])
771 if v >= 9:
772 return '-lc++'
773 else:
774 return '-lstdc++'
775 except:
776 return '-lstdc++'
777 return '-lstdc++'
778
780 """find the current compiler for the current directory"""
781
782
783
784 if compiler_type == 'fortran':
785 comp = re.compile("^\s*FC\s*=\s*([\w\/\\.\-]+)\s*")
786 elif compiler_type == 'cpp':
787 comp = re.compile("^\s*CXX\s*=\s*([\w\/\\.\-]+)\s*")
788 else:
789 MadGraph5Error, 'Unknown compiler type: %s' % compiler_type
790
791 for line in open(path):
792 if comp.search(line):
793 compiler = comp.search(line).groups()[0]
794 return compiler
795 elif compiler_type == 'fortran' and line.startswith('DEFAULT_F_COMPILER'):
796 return line.split('=')[1].strip()
797 elif compiler_type == 'cpp' and line.startswith('DEFAULT_CPP_COMPILER'):
798 return line.split('=')[1].strip()
799
801 """ return a list of all file starting with makefile in the given directory"""
802
803 out=[]
804
805 if type(directory)==list:
806 for name in directory:
807 out+=find_makefile_in_dir(name)
808 return out
809
810
811 for name in os.listdir(directory):
812 if os.path.isdir(directory+'/'+name):
813 out+=find_makefile_in_dir(directory+'/'+name)
814 elif os.path.isfile(directory+'/'+name) and name.lower().startswith('makefile'):
815 out.append(directory+'/'+name)
816 elif os.path.isfile(directory+'/'+name) and name.lower().startswith('make_opt'):
817 out.append(directory+'/'+name)
818 return out
819
821
822
823 os.path.walk('.', rm_file_extension, '.o')
824
825
826 libraries = ['libblocks.a', 'libgeneric_mw.a', 'libMWPS.a', 'libtools.a', 'libdhelas3.a',
827 'libdsample.a', 'libgeneric.a', 'libmodel.a', 'libpdf.a', 'libdhelas3.so', 'libTF.a',
828 'libdsample.so', 'libgeneric.so', 'libmodel.so', 'libpdf.so']
829 lib_pos='./lib'
830 [os.remove(os.path.join(lib_pos, lib)) for lib in libraries \
831 if os.path.exists(os.path.join(lib_pos, lib))]
832
846
850
854 replace_dict = dict(key_values)
855 replacement_function = lambda match: replace_dict[match.group(0)]
856 pattern = re.compile("|".join([re.escape(k) for k, v in key_values]), re.M)
857 return lambda string: pattern.sub(replacement_function, string)
858
861
864 def deco_check(f):
865 def deco_f(arg, *args, **opt):
866 try:
867 return f(arg, *args, **opt)
868 except OSError, error:
869 logger.debug('try to recover from %s' % error)
870 if isinstance(arg, list):
871 prog = arg[0]
872 else:
873 prog = arg[0]
874
875
876 if error.errno == 13:
877 if os.path.exists(prog):
878 os.system('chmod +x %s' % prog)
879 elif 'cwd' in opt and opt['cwd'] and \
880 os.path.isfile(pjoin(opt['cwd'],arg[0])):
881 os.system('chmod +x %s' % pjoin(opt['cwd'],arg[0]))
882 return f(arg, *args, **opt)
883
884 elif error.errno == 2:
885
886 raise Exception, '%s fails with no such file or directory' \
887 % arg
888 else:
889 raise
890 return deco_f
891 return deco_check
892
893
894 @check_system_error()
895 -def call(arg, *args, **opt):
896 """nice way to call an external program with nice error treatment"""
897 try:
898 return subprocess.call(arg, *args, **opt)
899 except OSError:
900 arg[0] = './%s' % arg[0]
901 return subprocess.call(arg, *args, **opt)
902
903 @check_system_error()
904 -def Popen(arg, *args, **opt):
905 """nice way to call an external program with nice error treatment"""
906 return subprocess.Popen(arg, *args, **opt)
907
908 @check_system_error()
909 -def call_stdout(arg, *args, **opt):
910 """nice way to call an external program with nice error treatment"""
911 try:
912 out = subprocess.Popen(arg, *args, stdout=subprocess.PIPE, **opt)
913 except OSError:
914 arg[0] = './%s' % arg[0]
915 out = subprocess.call(arg, *args, stdout=subprocess.PIPE, **opt)
916
917 str_out = out.stdout.read().strip()
918 return str_out
919
920
921 @multiple_try()
922 -def mult_try_open(filepath, *args, **opt):
923 """try to open a file with multiple try to ensure that filesystem is sync"""
924 return open(filepath, *args, ** opt)
925
926
927
928
929 -def tail(f, n, offset=None):
930 """Reads a n lines from f with an offset of offset lines. The return
931 value is a tuple in the form ``lines``.
932 """
933 avg_line_length = 74
934 to_read = n + (offset or 0)
935
936 while 1:
937 try:
938 f.seek(-(avg_line_length * to_read), 2)
939 except IOError:
940
941
942 f.seek(0)
943 pos = f.tell()
944 lines = f.read().splitlines()
945 if len(lines) >= to_read or pos == 0:
946 return lines[-to_read:offset and -offset or None]
947 avg_line_length *= 1.3
948 avg_line_length = int(avg_line_length)
949
951 """ makes a piping fifo (First-in First-out) file and nicely intercepts
952 error in case the file format of the target drive doesn't suppor tit."""
953
954 try:
955 os.mkfifo(fifo_path)
956 except:
957 raise OSError('MadGraph5_aMCatNLO could not create a fifo file at:\n'+
958 ' %s\n'%fifo_path+'Make sure that this file does not exist already'+
959 ' and that the file format of the target drive supports fifo file (i.e not NFS).')
960
965 """return the last line of a file"""
966
967 return tail(fsock, 1)[0]
968
970 """read a file returning the lines in reverse order for each call of readline()
971 This actually just reads blocks (4096 bytes by default) of data from the end of
972 the file and returns last line in an internal buffer."""
973
974
976 """ readline in a backward way """
977
978 while len(self.data) == 1 and ((self.blkcount * self.blksize) < self.size):
979 self.blkcount = self.blkcount + 1
980 line = self.data[0]
981 try:
982 self.seek(-self.blksize * self.blkcount, 2)
983 self.data = (self.read(self.blksize) + line).split('\n')
984 except IOError:
985 self.seek(0)
986 data = self.read(self.size - (self.blksize * (self.blkcount-1))) + line
987 self.data = data.split('\n')
988
989 if len(self.data) == 0:
990 return ""
991
992 line = self.data.pop()
993 return line + '\n'
994
995 - def __init__(self, filepos, blksize=4096):
996 """initialize the internal structures"""
997
998
999 self.size = os.stat(filepos)[6]
1000
1001 self.blksize = blksize
1002
1003 self.blkcount = 1
1004 file.__init__(self, filepos, 'rb')
1005
1006
1007 if self.size > self.blksize:
1008 self.seek(-self.blksize * self.blkcount, 2)
1009 self.data = self.read(self.blksize).split('\n')
1010
1011
1012 if not self.data[-1]:
1013 self.data.pop()
1014
1016 line = self.readline()
1017 if line:
1018 return line
1019 else:
1020 raise StopIteration
1021
1037
1051
1057 """create a temporary directory and ensure this one to be cleaned.
1058 """
1059
1060 - def __init__(self, suffix='', prefix='tmp', dir=None):
1061 self.nb_try_remove = 0
1062 import tempfile
1063 self.path = tempfile.mkdtemp(suffix, prefix, dir)
1064
1065
1066 - def __exit__(self, ctype, value, traceback ):
1067
1068 if False and isinstance(value, Exception):
1069 sprint("Directory %s not cleaned. This directory can be removed manually" % self.path)
1070 return False
1071 try:
1072 shutil.rmtree(self.path)
1073 except OSError:
1074 self.nb_try_remove += 1
1075 if self.nb_try_remove < 3:
1076 time.sleep(10)
1077 self.__exit__(ctype, value, traceback)
1078 else:
1079 logger.warning("Directory %s not completely cleaned. This directory can be removed manually" % self.path)
1080
1083
1085 """replace an attribute of a class with another value for the time of the
1086 context manager
1087 """
1088
1089 - def __init__(self, cls, attribute, value):
1090
1091 self.cls = cls
1092 self.attribute = attribute
1093 if isinstance(attribute, list):
1094 self.old_value = []
1095 for key, onevalue in zip(attribute, value):
1096 self.old_value.append(getattr(cls, key))
1097 setattr(self.cls, key, onevalue)
1098 else:
1099 self.old_value = getattr(cls, attribute)
1100 setattr(self.cls, self.attribute, value)
1101
1102 - def __exit__(self, ctype, value, traceback ):
1103
1104 if isinstance(self.attribute, list):
1105 for key, old_value in zip(self.attribute, self.old_value):
1106 setattr(self.cls, key, old_value)
1107 else:
1108 setattr(self.cls, self.attribute, self.old_value)
1109
1111 return self.old_value
1112
1113
1114
1115
1116 -def gunzip(path, keep=False, stdout=None):
1117 """ a standard replacement for os.system('gunzip -f %s.gz ' % event_path)"""
1118
1119 if not path.endswith(".gz"):
1120 if os.path.exists("%s.gz" % path):
1121 path = "%s.gz" % path
1122 else:
1123 raise Exception, "%(path)s does not finish by .gz and the file %(path)s.gz does not exists" %\
1124 {"path": path}
1125
1126
1127
1128 if os.path.getsize(path) > 1e8:
1129 if stdout:
1130 os.system('gunzip -c %s > %s' % (path, stdout))
1131 else:
1132 os.system('gunzip %s' % path)
1133 return 0
1134
1135 if not stdout:
1136 stdout = path[:-3]
1137 try:
1138 gfile = ziplib.open(path, "r")
1139 except IOError:
1140 raise
1141 else:
1142 try:
1143 open(stdout,'w').write(gfile.read())
1144 except IOError:
1145
1146 if stdout == path:
1147 return
1148 else:
1149 files.cp(path, stdout)
1150
1151 if not keep:
1152 os.remove(path)
1153 return 0
1154
1155 -def gzip(path, stdout=None, error=True, forceexternal=False):
1156 """ a standard replacement for os.system('gzip %s ' % path)"""
1157
1158
1159 if os.path.getsize(path) > 1e9 or forceexternal:
1160 call(['gzip', '-f', path])
1161 if stdout:
1162 if not stdout.endswith(".gz"):
1163 stdout = "%s.gz" % stdout
1164 shutil.move('%s.gz' % path, stdout)
1165 return
1166
1167 if not stdout:
1168 stdout = "%s.gz" % path
1169 elif not stdout.endswith(".gz"):
1170 stdout = "%s.gz" % stdout
1171
1172 try:
1173 ziplib.open(stdout,"w").write(open(path).read())
1174 except OverflowError:
1175 gzip(path, stdout, error=error, forceexternal=True)
1176 except Exception:
1177 if error:
1178 raise
1179 else:
1180 os.remove(path)
1181
1186 """ a convinient class to open a file """
1187
1188 web_browser = None
1189 eps_viewer = None
1190 text_editor = None
1191 configured = False
1192
1194 """open a file"""
1195
1196
1197 if not self.configured:
1198 self.configure()
1199
1200 try:
1201 extension = filename.rsplit('.',1)[1]
1202 except IndexError:
1203 extension = ''
1204
1205
1206
1207 if extension in ['html','htm','php']:
1208 self.open_program(self.web_browser, filename, background=True)
1209 elif extension in ['ps','eps']:
1210 self.open_program(self.eps_viewer, filename, background=True)
1211 else:
1212 self.open_program(self.text_editor,filename, mac_check=False)
1213
1214
1215 @classmethod
1238
1239 @classmethod
1277
1278
1279 @staticmethod
1281 """find a valid shell program in the list"""
1282
1283 for p in possibility:
1284 if which(p):
1285 logger.info('Using default %s \"%s\". ' % (program, p) + \
1286 'Set another one in ./input/mg5_configuration.txt')
1287 return p
1288
1289 logger.info('No valid %s found. ' % program + \
1290 'Please set in ./input/mg5_configuration.txt')
1291 return None
1292
1293
1294 - def open_program(self, program, file_path, mac_check=True, background=False):
1295 """ open a file with a given program """
1296
1297 if mac_check==True and sys.platform == 'darwin':
1298 return self.open_mac_program(program, file_path)
1299
1300
1301 if program:
1302 arguments = program.split()
1303 arguments.append(file_path)
1304
1305 if not background:
1306 subprocess.call(arguments)
1307 else:
1308 import thread
1309 thread.start_new_thread(subprocess.call,(arguments,))
1310 else:
1311 logger.warning('Not able to open file %s since no program configured.' % file_path + \
1312 'Please set one in ./input/mg5_configuration.txt')
1313
1315 """ open a text with the text editor """
1316
1317 if not program:
1318
1319 os.system('open %s' % file_path)
1320 elif which(program):
1321
1322 arguments = program.split()
1323 arguments.append(file_path)
1324 subprocess.call(arguments)
1325 else:
1326
1327 os.system('open -a %s %s' % (program, file_path))
1328
1348
1350 """ Try and guess what shell type does the user use."""
1351 try:
1352 if os.environ['SHELL'].endswith('bash'):
1353 return 'bash'
1354 elif os.environ['SHELL'].endswith('tcsh'):
1355 return 'tcsh'
1356 else:
1357
1358 return None
1359 except KeyError:
1360 return None
1361
1363 """ check if a path is executable"""
1364 try:
1365 return os.access(path, os.X_OK)
1366 except Exception:
1367 return False
1368
1370 """Option Peaser which raise an error instead as calling exit"""
1371
1372 - def exit(self, status=0, msg=None):
1377
1379 """Returns the current line number in our program."""
1380
1381 if not __debug__:
1382 return
1383
1384
1385 import inspect
1386 if opt.has_key('cond') and not opt['cond']:
1387 return
1388
1389 use_print = False
1390 if opt.has_key('use_print') and opt['use_print']:
1391 use_print = True
1392
1393 if opt.has_key('log'):
1394 log = opt['log']
1395 else:
1396 log = logging.getLogger('madgraph')
1397 if opt.has_key('level'):
1398 level = opt['level']
1399 else:
1400 level = logging.getLogger('madgraph').level
1401 if level == 0:
1402 use_print = True
1403
1404
1405
1406
1407 if opt.has_key('wait'):
1408 wait = bool(opt['wait'])
1409 else:
1410 wait = False
1411
1412 lineno = inspect.currentframe().f_back.f_lineno
1413 fargs = inspect.getframeinfo(inspect.currentframe().f_back)
1414 filename, lineno = fargs[:2]
1415
1416
1417 try:
1418 source = inspect.getsourcelines(inspect.currentframe().f_back)
1419 line = source[0][lineno-source[1]]
1420 line = re.findall(r"misc\.sprint\(\s*(.*)\)\s*($|#)", line)[0][0]
1421 if line.startswith("'") and line.endswith("'") and line.count(",") ==0:
1422 line= ''
1423 elif line.startswith("\"") and line.endswith("\"") and line.count(",") ==0:
1424 line= ''
1425 elif line.startswith(("\"","'")) and len(args)==1 and "%" in line:
1426 line= ''
1427 except Exception:
1428 line=''
1429
1430 if line:
1431 intro = ' %s = \033[0m' % line
1432 else:
1433 intro = ''
1434
1435
1436 if not use_print:
1437 log.log(level, ' '.join([intro]+[str(a) for a in args]) + \
1438 ' \033[1;30m[%s at line %s]\033[0m' % (os.path.basename(filename), lineno))
1439 else:
1440 print ' '.join([intro]+[str(a) for a in args]) + \
1441 ' \033[1;30m[%s at line %s]\033[0m' % (os.path.basename(filename), lineno)
1442
1443 if wait:
1444 raw_input('press_enter to continue')
1445 elif opt.has_key('sleep'):
1446 time.sleep(int(opt['sleep']))
1447
1448 return
1449
1450
1451
1452
1453 -def equal(a,b,sig_fig=6, zero_limit=True):
1454 """function to check if two float are approximatively equal"""
1455 import math
1456
1457 if isinstance(sig_fig, int):
1458 if not a or not b:
1459 if zero_limit:
1460 if zero_limit is not True:
1461 power = zero_limit
1462 else:
1463 power = sig_fig + 1
1464 else:
1465 return a == b
1466 else:
1467 power = sig_fig - int(math.log10(abs(a)))
1468
1469 return ( a==b or abs(int(a*10**power) - int(b*10**power)) < 10)
1470 else:
1471 return abs(a-b) < sig_fig
1472
1473
1474
1475
1476
1477
1478
1479 -class chdir:
1481 self.newPath = newPath
1482
1484 self.savedPath = os.getcwd()
1485 os.chdir(self.newPath)
1486
1487 - def __exit__(self, etype, value, traceback):
1488 os.chdir(self.savedPath)
1489
1490
1491
1492
1493
1494 -def timeout(func, args=(), kwargs={}, timeout_duration=1, default=None):
1495 '''This function will spwan a thread and run the given function using the args, kwargs and
1496 return the given default value if the timeout_duration is exceeded
1497 '''
1498 import threading
1499 class InterruptableThread(threading.Thread):
1500 def __init__(self):
1501 threading.Thread.__init__(self)
1502 self.result = default
1503 def run(self):
1504 try:
1505 self.result = func(*args, **kwargs)
1506 except Exception,error:
1507 print error
1508 self.result = default
1509 it = InterruptableThread()
1510 it.start()
1511 it.join(timeout_duration)
1512 return it.result
1513
1514
1515
1516
1517
1518 -class digest:
1519
1521 try:
1522 return self.test_hashlib()
1523 except Exception:
1524 pass
1525 try:
1526 return self.test_md5()
1527 except Exception:
1528 pass
1529 try:
1530 return self.test_zlib()
1531 except Exception:
1532 pass
1533
1535 import hashlib
1536 def digest(text):
1537 """using mg5 for the hash"""
1538 t = hashlib.md5()
1539 t.update(text)
1540 return t.hexdigest()
1541 return digest
1542
1544 import md5
1545 def digest(text):
1546 """using mg5 for the hash"""
1547 t = md5.md5()
1548 t.update(text)
1549 return t.hexdigest()
1550 return digest
1551
1553 import zlib
1554 def digest(text):
1555 return zlib.adler32(text)
1556
1557 digest = digest().test_all()
1564 self.cmd_args = args
1565 self.cmd_opts = opts
1566 self.execution_state = False
1567
1569 self.max_vms_memory = 0
1570 self.max_rss_memory = 0
1571
1572 self.t1 = None
1573 self.t0 = time.time()
1574 self.p = subprocess.Popen(*self.cmd_args,**self.cmd_opts)
1575 self.execution_state = True
1576
1578 if not self.check_execution_state():
1579 return False
1580
1581 self.t1 = time.time()
1582
1583
1584
1585 flash = subprocess.Popen("ps -p %i -o rss"%self.p.pid,
1586 shell=True,stdout=subprocess.PIPE,stderr=open(os.devnull,"w"))
1587 stdout_list = flash.communicate()[0].split('\n')
1588 rss_memory = int(stdout_list[1])
1589
1590 vms_memory = 0
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619 self.max_vms_memory = max(self.max_vms_memory,vms_memory)
1620 self.max_rss_memory = max(self.max_rss_memory,rss_memory)
1621
1622 return self.check_execution_state()
1623
1625
1626
1627 return self.p.poll() == None
1628
1630 if not self.execution_state:
1631 return False
1632 if self.is_running():
1633 return True
1634 self.executation_state = False
1635 self.t1 = time.time()
1636 return False
1637
1638 - def close(self,kill=False):
1639
1640 if self.p.poll() == None:
1641 if kill:
1642 self.p.kill()
1643 else:
1644 self.p.terminate()
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657 -class Applenotification(object):
1658
1660 self.init = False
1661 self.working = True
1662
1664 try:
1665 import Foundation
1666 import objc
1667 self.NSUserNotification = objc.lookUpClass('NSUserNotification')
1668 self.NSUserNotificationCenter = objc.lookUpClass('NSUserNotificationCenter')
1669 except:
1670 self.working=False
1671 self.working=True
1672
1673 - def __call__(self,subtitle, info_text, userInfo={}):
1674
1675 if not self.init:
1676 self.load_notification()
1677 if not self.working:
1678 return
1679 try:
1680 notification = self.NSUserNotification.alloc().init()
1681 notification.setTitle_('MadGraph5_aMC@NLO')
1682 notification.setSubtitle_(subtitle)
1683 notification.setInformativeText_(info_text)
1684 try:
1685 notification.setUserInfo_(userInfo)
1686 except:
1687 pass
1688 self.NSUserNotificationCenter.defaultUserNotificationCenter().scheduleNotification_(notification)
1689 except:
1690 pass
1691
1692
1693
1694 apple_notify = Applenotification()
1697
1698 done_notification = False
1699 message_aprilfirst =\
1700 {'error': ['Be careful, a cat is eating a lot of fish today. This makes the code unstable.',
1701 'Really, this sounds fishy.',
1702 'A Higgs boson walks into a church. The priest says "We don\'t allow Higgs bosons in here." The Higgs boson replies, "But without me, how can you have mass?"',
1703 "Why does Heisenberg detest driving cars? Because, every time he looks at the speedometer he gets lost!",
1704 "May the mass times acceleration be with you.",
1705 "NOTE: This product may actually be nine-dimensional. If this is the case, functionality is not affected by the extra five dimensions.",
1706 "IMPORTANT: This product is composed of 100%% matter: It is the responsibility of the User to make sure that it does not come in contact with antimatter.",
1707 'The fish are out of jokes. See you next year for more!'],
1708 'loading': ['Hi %(user)s, You are Loading Madgraph. Please be patient, we are doing the work.'],
1709 'quit': ['Thanks %(user)s for using MadGraph5_aMC@NLO, even on April 1st!']
1710 }
1711
1713
1714 try:
1715 now = time.localtime()
1716 date = now.tm_mday, now.tm_mon
1717 if date in [(1,4)]:
1718 if msgtype in EasterEgg.message_aprilfirst:
1719 choices = EasterEgg.message_aprilfirst[msgtype]
1720 if len(choices) == 0:
1721 return
1722 elif len(choices) == 1:
1723 msg = choices[0]
1724 else:
1725 import random
1726 msg = choices[random.randint(0,len(choices)-2)]
1727 EasterEgg.message_aprilfirst[msgtype].remove(msg)
1728
1729 else:
1730 return
1731 if MADEVENT:
1732 return
1733
1734 import os
1735 import pwd
1736 username =pwd.getpwuid( os.getuid() )[ 0 ]
1737 msg = msg % {'user': username}
1738 if sys.platform == "darwin":
1739 self.call_apple(msg)
1740 else:
1741 self.call_linux(msg)
1742 except Exception, error:
1743 sprint(error)
1744 pass
1745
1747 try:
1748 self.call_apple(msg)
1749 except:
1750 pass
1751
1753
1754
1755 p = subprocess.Popen("osascript -e 'get volume settings'", stdout=subprocess.PIPE, shell=True)
1756 output, _ = p.communicate()
1757
1758 info = dict([[a.strip() for a in l.split(':',1)] for l in output.strip().split(',')])
1759 muted = False
1760 if 'output muted' in info and info['output muted'] == 'true':
1761 muted = True
1762 elif 'output volume' in info and info['output volume'] == '0':
1763 muted = True
1764
1765 if muted:
1766 if not EasterEgg.done_notification:
1767 apple_notify('On April first','turn up your volume!')
1768 EasterEgg.done_notification = True
1769 else:
1770 os.system('say %s' % msg)
1771
1772
1774
1775 fishPath = madgraph.MG5DIR+"/input/.cowgraph.cow"
1776 if os.path.exists(fishPath):
1777 fishPath = " -f " + fishPath
1778
1779
1780
1781 fishPole = which('cowthink')
1782 if not os.path.exists(fishPole):
1783 if os.path.exists(which('cowsay')):
1784 fishPole = which('cowsay')
1785 else:
1786 return
1787
1788
1789 fishCmd = fishPole + fishPath + " " + msg
1790 os.system(fishCmd)
1791
1792
1793 if __debug__:
1794 try:
1795 import os
1796 import pwd
1797 username =pwd.getpwuid( os.getuid() )[ 0 ]
1798 if 'hirschi' in username or 'vryonidou' in username and __debug__:
1799 EasterEgg('loading')
1800 except:
1801 pass
1805 """ return v2 if v1>v2
1806 return v1 if v1<v2
1807 return v1 if v1=v2
1808 return v1 if v2 is not in 1.2.3.4.5 format
1809 return v2 if v1 is not in 1.2.3.4.5 format
1810 """
1811 from itertools import izip_longest
1812 for a1, a2 in izip_longest(v1, v2, fillvalue=0):
1813 try:
1814 a1= int(a1)
1815 except:
1816 return v2
1817 try:
1818 a2= int(a2)
1819 except:
1820 return v1
1821 if a1 > a2:
1822 return v2
1823 elif a1 < a2:
1824 return v1
1825 return v1
1826
1827
1828
1829 plugin_support = {}
1867
1868
1869
1870 -def set_global(loop=False, unitary=True, mp=False, cms=False):
1900 return deco_f_set
1901 return deco_set
1902
1907 """convenient way to import a plugin file/function"""
1908
1909 try:
1910 _temp = __import__('PLUGIN.%s' % module, globals(), locals(), fcts, -1)
1911 except ImportError:
1912 try:
1913 _temp = __import__('MG5aMC_PLUGIN.%s' % module, globals(), locals(), fcts, -1)
1914 except ImportError:
1915 raise MadGraph5Error, error_msg
1916
1917 if not fcts:
1918 return _temp
1919 elif len(fcts) == 1:
1920 return getattr(_temp,fcts[0])
1921 else:
1922 return [getattr(_temp,name) for name in fcts]
1923
1924 -def from_plugin_import(plugin_path, target_type, keyname=None, warning=False,
1925 info=None):
1926 """return the class associated with keyname for a given plugin class
1927 if keyname is None, return all the name associated"""
1928
1929 validname = []
1930 for plugpath in plugin_path:
1931 plugindirname = os.path.basename(plugpath)
1932 for plug in os.listdir(plugpath):
1933 if os.path.exists(pjoin(plugpath, plug, '__init__.py')):
1934 try:
1935 with stdchannel_redirected(sys.stdout, os.devnull):
1936 __import__('%s.%s' % (plugindirname,plug))
1937 except Exception, error:
1938 if warning:
1939 logger.warning("error detected in plugin: %s.", plug)
1940 logger.warning("%s", error)
1941 continue
1942 plugin = sys.modules['%s.%s' % (plugindirname,plug)]
1943 if hasattr(plugin, target_type):
1944 if not is_plugin_supported(plugin):
1945 continue
1946 if keyname is None:
1947 validname += getattr(plugin, target_type).keys()
1948 else:
1949 if keyname in getattr(plugin, target_type):
1950 if not info:
1951 logger.info('Using from plugin %s mode %s' % (plug, keyname), '$MG:BOLD')
1952 else:
1953 logger.info(info % {'plug': plug, 'key':keyname}, '$MG:BOLD')
1954 return getattr(plugin, target_type)[keyname]
1955
1956 if not keyname:
1957 return validname
1958
1959
1960
1961
1962 python_lhapdf=None
1964 """load the python module of lhapdf return None if it can not be loaded"""
1965
1966
1967 global python_lhapdf
1968 if python_lhapdf:
1969 if python_lhapdf == -1:
1970 return None
1971 else:
1972 return python_lhapdf
1973
1974 use_lhapdf=False
1975 try:
1976 lhapdf_libdir=subprocess.Popen([lhapdfconfig,'--libdir'],\
1977 stdout=subprocess.PIPE).stdout.read().strip()
1978 except:
1979 use_lhapdf=False
1980 return False
1981 else:
1982 try:
1983 candidates=[dirname for dirname in os.listdir(lhapdf_libdir) \
1984 if os.path.isdir(os.path.join(lhapdf_libdir,dirname))]
1985 except OSError:
1986 candidates=[]
1987 for candidate in candidates:
1988 if os.path.isfile(os.path.join(lhapdf_libdir,candidate,'site-packages','lhapdf.so')):
1989 sys.path.insert(0,os.path.join(lhapdf_libdir,candidate,'site-packages'))
1990 try:
1991 import lhapdf
1992 use_lhapdf=True
1993 break
1994 except ImportError:
1995 sys.path.pop(0)
1996 continue
1997 if not use_lhapdf:
1998 try:
1999 candidates=[dirname for dirname in os.listdir(lhapdf_libdir+'64') \
2000 if os.path.isdir(os.path.join(lhapdf_libdir+'64',dirname))]
2001 except OSError:
2002 candidates=[]
2003 for candidate in candidates:
2004 if os.path.isfile(os.path.join(lhapdf_libdir+'64',candidate,'site-packages','lhapdf.so')):
2005 sys.path.insert(0,os.path.join(lhapdf_libdir+'64',candidate,'site-packages'))
2006 try:
2007 import lhapdf
2008 use_lhapdf=True
2009 break
2010 except ImportError:
2011 sys.path.pop(0)
2012 continue
2013 if not use_lhapdf:
2014 try:
2015 import lhapdf
2016 use_lhapdf=True
2017 except ImportError:
2018 print 'fail'
2019 logger.warning("Failed to access python version of LHAPDF: "\
2020 "If the python interface to LHAPDF is available on your system, try "\
2021 "adding its location to the PYTHONPATH environment variable and the"\
2022 "LHAPDF library location to LD_LIBRARY_PATH (linux) or DYLD_LIBRARY_PATH (mac os x).")
2023
2024 if use_lhapdf:
2025 python_lhapdf = lhapdf
2026 python_lhapdf.setVerbosity(0)
2027 else:
2028 python_lhapdf = None
2029 return python_lhapdf
2030
2032 """implement newton method for solving f(x)=0, df is the derivate"""
2033 x = x0
2034 iter=0
2035 while abs(f(x)) > error:
2036 iter+=1
2037 x = x - f(x)/df(x)
2038 if iter ==maxiter:
2039 sprint('fail to solve equation')
2040 raise Exception
2041 return x
2042
2043 -def wget(http, path, *args, **opt):
2044 """a wget function for both unix and mac"""
2045
2046 if sys.platform == "darwin":
2047 return call(['curl', '-L', http, '-o%s' % path], *args, **opt)
2048 else:
2049 return call(['wget', http, '--output-document=%s'% path], *args, **opt)
2050
2051
2052
2053
2054
2055
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