CODEWITHSUNDEEP
pythonregexexpression
Khalid Sh
Khalid Sh

Reputation: 13

how to replace only the first word in regular expression in python

i want to ask how we can replace only the first word in regular expression in python i do this code :

print "number of all KSU occurrences %i "%len(re.findall("ksu",string,re.IGNORECASE))
print "number of all KSU at end lof line %i"%len(re.findall("ksu\n",string,re.IGNORECASE))

and this is my txt file

hello i'm student in KSU i love ksu , i like ksu , i KSU ksu KSU

i just want to replace only first ksu ( ignoring case ) into King Saud University

Upvotes: 1

Views: 131

Answers (1)

Tim Pietzcker
Tim Pietzcker

Reputation: 336078

re.sub() takes a count parameter:

re.sub(r"\bksu\b", "King Saud University", string, flags=re.I, count=1)

Upvotes: 1

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