Hi I want to search a text file (.txt) for words that I specify in my program. However, I can’t come up with any working solution. My program search string in a text file for ‘met|meeting|me ets’ but it returns values from words like “metro”: met-ro. I want it to look only for words ‘met, meeting, etc.’ and I don’t want them to be a part of other words. This is what I have right now:
pattern = re.compile('(?i )met|meeting')
match = re.search(patte rn, filestring)
if match:
print 'Found match in ' +filename
print
count = count + 1
else:
print 'Match not found in ' +filename
print
Can anyone give me solution to that problem?
Thx
2 1656
Hi I want to search a text file (.txt) for words that I specify in my program. However, I can’t come up with any working solution. My program search string in a text file for ‘met|meeting|me ets’ but it returns values from words like “metro”: met-ro. I want it to look only for words ‘met, meeting, etc.’ and I don’t want them to be a part of other words. This is what I have right now:
pattern = re.compile('(?i )met|meeting')
match = re.search(patte rn, filestring)
if match:
print 'Found match in ' +filename
print
count = count + 1
else:
print 'Match not found in ' +filename
print
Can anyone give me solution to that problem?
Thx
if you really have to use regular expression, you can use the \b ( match at word boundary) operator. eg -
>>> import re
-
>>> data=open("file").read()
-
>>> re.findall(r'\bmet\b|\bmeeting\b|\bmeets\b',data)
-
['meeting', 'meets', 'met']
-
sample input: -
metro
-
comet
-
meeting
-
meteor
-
meetings
-
meets
-
meetshere
-
met
-
however without regular expression, you can use the equality operator "==" to test your search or the "in" keyword
eg only: -
>>> for line in open("file"):
-
... if "meet" == line.strip(): #or if line.strip() in ['meet','meeting','met']
-
... print "found"
-
thanks it works just how I wanted!!!
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