Python String replace behaves differently

Question

The below string replace code prints "XXaXXbXXcXX1XX2XX3XX". I know there is a reason behind it but having hard time finding it. Can someone please explain why?

if __name__ == '__main__':
    match = ""
    replace = "XX"
    strr = "abc123"
    print strr.replace(match, replace)

Daniel Roseman · Accepted Answer · 2015-07-29 21:11:37Z

3

It's replacing the empty string between each pair of characters with XX.

answered Jul 29, 2015 at 21:11

Daniel Roseman

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1 Comment

TigerhawkT3 Over a year ago

And the empty strings at the beginning and end of the string.

Clodion · Accepted Answer · 2015-07-29 21:19:08Z

2

You replace every "" (empty string) by "XX". Python consider that between two character there is a empty string!!! And before the first character and after the last.
It's just that!

edited Jul 29, 2015 at 21:19

answered Jul 29, 2015 at 21:12

Clodion

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1 Comment

Shasti Over a year ago

'It's just that'. Exactly the confirmation I wanted to hear. Thanks!

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