Python conditional replacement based on element type

Question

In Python 3.7 I am trying to remove pipe characters

r=(('ab|cd', 1, 'ab|cd', 1), ('ab|cd', 1, 'ab|cd', 1))
[[x.replace('|', '') for x in l] for l in r]

Error: 'int' object has no attribute 'replace'

Desired outcome: (('abcd', 1, 'abcd', 1), ('abcd', 1, 'abcd', 1))

How can I skip the replace command on elements that are not strings?

Answer 1

Your original r appears to be a tuple, not a list, so you may want to retain that as well. You can simply add the condition like this:

r=(('ab|cd', 1, 'ab|cd', 1), ('ab|cd', 1, 'ab|cd', 1))
[[x.replace('|', '') if isinstance(x, str) else x for x in l] for l in r]

And to retain the tuple type:

tuple(tuple(x.replace('|', '') if isinstance(x, str) else x for x in l) for l in r)