How to define a replace string function?

Question

What is my error in this string function? Cannot figure out what I did wrong.

Return a string like s, but with all instances of orig replaced with repl.

Example:
>>> replace('Hellx wxrld', 'x', 'o')
'Hello world'

def replace(s, orig, repl):
    s.replace(orig, repl)
    return s

Strings are immutable - s.replace can't change the value of s, it can only create a new one. — tdelaney
– tdelaney, Commented Mar 16, 2022 at 22:29

AdamMcKay · Accepted Answer · 2022-03-16 22:11:32Z

1

The Python docs says "Return a copy of the string" which means that the s variable isn't modified, so you need to modify your code to return the replace.

def replace(s, orig, repl):
    return s.replace(orig, repl)

answered Mar 16, 2022 at 22:11

AdamMcKay

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