Practical Data Wrangling

Matching a range of characters

It is possible to match a range of characters instead of just one. This can add some flexibility to the pattern:

• [A-Z] matches all capital letters
• [a-z] matches all lowercase letters
• [0-9] matches all digits

....lower_case_letter = re.compile("[a-z]")if lower_case_letter.search("a"):    print("'a' is a match")if lower_case_letter.search("B"):    print("'B' is a match")if lower_case_letter.search("123 A B 2"):    print("'123 A B 2' is a match")digit = re.compile("[0-9]")if digit.search("1"):    print("'a' is a match")if digit.search("342"):    print("'a' is a match")if digit.search("asdf abcd"):    print("'a' is a match")