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def fun(s): return bool(re.match(r"^[a-zA-Z0-9_-]+@[a-zA-Z0-9]+.[a-zA-Z]{1,3}$", s))
I think ''\'' before '.' is missing. The corrected answer is the following:
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def fun(s): return bool(re.match(r"^[a-zA-Z0-9_-]+@[a-zA-Z0-9]+.[a-zA-Z]{1,3}$", s))
I think ''\'' before '.' is missing. The corrected answer is the following:
def fun(s): return bool(re.match(r"^[a-zA-Z0-9_-]+@[a-zA-Z0-9]+.[a-zA-Z]{1,3}$", s))