import re
class PatternList( object ):
"""A Patternlist is a list of regular expressions. the 'in' operator
allows a string to be compared against each expression (using search
NOT match)"""
def __init__(self , patterns = []):
self.patterns = []
for p in patterns:
self.add( p )
def add( self , pattern ):
pat = re.compile( pattern )
self.patterns.append( pat )
def __contains__(self , item ):
ret = False
for p in self.patterns:
if p.search( item ):
ret= True
break
return ret
if __name__=="__main__":
examplelist = PatternList( [ ".*txt$" , ".*doc$" ])
assert( "test.txt" in examplelist )
assert( "test.xls" not in examplelist )
