otp.Operation.str.match

match(pat, case=True)

Match the text against a regular expression specified in the pat parameter.

Parameters

• pat (str or Column or Operation) – A pattern specified via the POSIX extended regular expression syntax.

• case (bool) – If True, then regular expression is case-sensitive.

Returns

True if the match was successful, False otherwise. Note that boolean Operation is converted to float if added as a column.

Return type

Operation

Examples

>>> data = otp.Ticks(X=['hello', 'there were 77 ticks'])
>>> data['Y'] = data['X'].str.match('\d\d')
>>> otp.run(data)
                     Time                    X    Y
0 2003-12-01 00:00:00.000                hello  0.0
1 2003-12-01 00:00:00.001  there were 77 ticks  1.0

Other columns can be used as parameter pat too:

>>> data = otp.Tick(X='OneTick', PAT='onetick')
>>> data['Y'] = data['X'].str.match(data['PAT'], case=False)
>>> otp.run(data)
        Time        X      PAT    Y
0 2003-12-01  OneTick  onetick  1.0