Prerequisites: Regular Expression in Python
Given a string. The task is to count the number of Uppercase, Lowercase, special character and numeric values present in the string using Regular expression in Python.
Examples:
Input : "ThisIsGeeksforGeeks!, 123" Output : No. of uppercase characters = 4 No. of lowercase characters = 15 No. of numerical characters = 3 No. of special characters = 2
Approach: The re.findall(pattern, string, flags=0) method can be used to find all non-overlapping matches of a pattern in the string. The return value is a list of strings.
Below is the implementation.
import re string = "ThisIsGeeksforGeeks !, 123" # Creating separate lists using # the re.findall() method. uppercase_characters = re.findall(r"[A-Z]", string) lowercase_characters = re.findall(r"[a-z]", string) numerical_characters = re.findall(r"[0-9]", string) special_characters = re.findall(r"[, .!?]", string) print("The no. of uppercase characters is", len(uppercase_characters)) print("The no. of lowercase characters is", len(lowercase_characters)) print("The no. of numerical characters is", len(numerical_characters)) print("The no. of special characters is", len(special_characters)) |
Output:
The no. of uppercase characters is 4 The no. of lowercase characters is 15 The no. of numerical characters is 3 The no. of special characters is 4
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