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Home/ Questions/Q 8988023
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Editorial Team
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Editorial Team
Asked: June 15, 20262026-06-15T21:55:43+00:00 2026-06-15T21:55:43+00:00

s = hello cats print(re.search(rhello,s).groups()) This prints () . According to the documentation, groups()

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s = "hello cats"
print(re.search(r"hello",s).groups())

This prints ().

According to the documentation, groups() returns an empty tuple if no matches were found. So why doesn’t this match?

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  1. Editorial Team
    Editorial Team
    2026-06-15T21:55:44+00:00Added an answer on June 15, 2026 at 9:55 pm

    groups returns matched groups. You did not define any:

    s = "hello cats"
    print(re.search(r"(he)l(lo)",s).groups())
    

    prints ('he', 'lo')

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