python - Issues with regular_expression -

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i wrote script open multiple text files if line match specific pattern. after compare line country pattern(which contain country names) , (for now) print country.

(later try create method move each text file folder based on it's country)

basically each of text file contains line :

25/02/2015|11:06:21|mys|mys14_frc6-7_my1_aa1_wp|mms1|wxp2632|ashraf|true|120|0|false|

as can see example contains country name "mys"

import os import string import re import sys import glob import fileinput  country_pattern = 'mys','idn','zaf', 'tha','twn','sgp', 'nwz', 'aus','alb','aut','bel', 'bgr', 'bih', 'che','cze', 'deu', 'dnk', 'esp','est','srb','mdk','mne','bih', 'bih','mne','fin', 'fra', 'gbr','grc', 'hrv', 'hun', 'irl', 'ita', 'lie', 'ltu', 'lux', 'lva', 'mda', 'smr','cyp','nld','nor','pol','prt','rou','scg', 'svk','svn','swe','tur','bra','can','usa','mex','chl','arg','rus' pattern = r'(\d+)/(\d+)/(\d+)|(\d+):(\d+):(\d+)|(\s+)|(\s+)|(\s+|(\s+)|(\s+)|(\s+)|(\d+)|(\d+)|(\s+)|' src = raw_input("enter source disk location: ") src = os.path.dirname(src) # zwraca sciezke pliku dir,_,_ in os.walk(src): # odwoluje sie wielu folderow file_path = glob.glob(os.path.join(dir,"*.txt")) # szukam plikow mdi print(file_path) file in file_path:      f = open(file, 'r')     object_name = f.readlines()     f.close()       line_name_tmp in object_name:          line_name = line_name_tmp.replace('\n','')         if line_name == '':             line_name.split()             continue         else:             try:                 re.search(pattern, line_name)              except:                 print line_name                 pass          searchobj = re.search(pattern, line_name)          m = searchobj.group(1)         if m in coutry_pattern:             print "searchobj.group(1) : ", searchobj.group(1)         else:             print 'did not find any'

unfortunately error:

  file "<string>", line 254, in run_nodebug   file "c:\users\kostrzew\desktop\reports\mdiadmin.py", line 43, in <module>   searchobj = re.search(pattern, line_name) #   file "c:\python27\lib\re.py", line 142, in search     return _compile(pattern, flags).search(string)   file "c:\python27\lib\re.py", line 245, in _compile     raise error, v # invalid expression   sre_constants.error: unbalanced parenthesis

i don't know how solve error. did miss on pattern?

you've omitted 1 close parenthesis in regex :

pattern = r'(\d+)/(\d+)/(\d+)|(\d+):(\d+):(\d+)|(\s+)|(\s+)|(\s+|(\s+)|(\s+)|(\s+)|(\d+)|(\d+)|(\s+)|'                                                                ^

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