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Answers and rating deltas for

Why does using regular expression to check the input from user give me error message in Python?

Author Votes Δ
James 1 +1.01
John1024 1 +0.18
Martin Evans 0 -0.84
Evan Nowak 0 -1.20
Kaushik NP 0 -1.57
Last visited: Dec 14, 2017, 4:32:24 PM