python - How use regular expressions to compare an input with a set? -

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python - How use regular expressions to compare an input with a set? -

i regular look python code to:

1) take input of characters 2) outputs characters in lower case letters 3) compares output in python set.

i no @ regular expressions.

why bother?

>>> 'foo'.lower() in set(('foo', 'bar', 'baz')) true >>> 'quux'.lower() in set(('foo', 'bar', 'baz')) false

python regex

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