Question: Using python, Describe the class of strings matched by the following regular expressions: 1. [a - z A - Z ] + 2. [A -

Using python, Describe the class of strings matched by the following regular expressions:

1. [a - z A - Z ] +

2. [A - Z ][a-z] *

3. p[aeiou], 2t

4. \ d+ (\ .\ d +)?

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