[Python] How can I make this shorter? [closed]

def reverse_str(revstr: str):
"""Reverses a string. (Can be a number.)"""
if not is_type(revstr, str):
revstr = str(revstr)
chars = []; new_word = ''
for ch in revstr:
chars.append(ch)
chars.reverse()
for ch in chars:
new_word += ch
return new_word

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