re.sub() - Substitute Matches with String
Q
How to substitutes matches of a regular expression in a target string with another string using re.sub()?
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A
The re.sub() function allows you to substitute (or replace)
matches of a given regular expression in
match the beginning part of a target string
with of a given regular expression.
import re f = re.sub(pattern, repl, string, count=0, flags=0) Where: pattern is the regular expression repl is the replacement string string is the target string count=0 means replacing all matches f is the final string after replacements are done
Here is Python example that shows you how to use the re.findall() function:
>>> import re >>> s = "Hello perl.org, php.net, and python.org!" >>> p = "(\\w+)\\.(\\w+)" >>> print(p) (\w+)\.(\w+) >>> r = "domain" >>> f = re.sub(p,r,s) >>> print(f) Hello domain, domain, and domain!
⇒ Use Match Group \g<n> in Replacement
⇐ re.match() - Match from String Beginning
2018-10-19, 1488👍, 0💬
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