Replace matching substrings with a new string for all occurrences, or a specified number.
re.sub(<pattern>, <replacement>, string, <count>, <flags>)
<pattern> is a regular expression that can include any of the following:
- A string:
- A character class code:
- A regex symbol:
The other arguments include:
- The replacement string (
- An integer value for the number of replacements (
The following example replaces all occurrences of “BI” with “business intelligence”:
import reblurb = '''The analytics firm uses a range of BI tools to visualize data. Their internal data science team suggestsbi tools may be their most valuable resource.'''match = re.sub(r'bi','business intelligence',blurb,flags=re.IGNORECASE)# The ignorecase flag allows for matches regardless of caseprint(match)
This will print the following where “bi” is replaced with “business intelligence”:
The analytics firm uses a range of business intelligence tools to visualize data. Their internal data science team suggestsbusiness intelligence tools may be their most valuable resource.
Replace all numerical values with “REDACTED”: