Introduction

The task is to find the occurrence of uppercase, lowercase, numeric value and special characters in the given input using regression.

Program

import re
ip_str = input("Enter the string: ")
# Using re.findall()
ucase = re.findall(r"[A-Z]", ip_str)
lcase = re.findall(r"[a-z]", ip_str)
specialc = re.findall(r"[,.!?]", ip_str)
numc = re.findall(r"[0-9]", ip_str)


print("Uppercase character count: ", len(ucase))
print("Lowercase character count: ", len(lcase))
print("Special character count: ", len(specialc))
print("Numerical character count: ", len(numc))

Output

Explanation

The re.findall() has three arguments: pattern, input string, and flag = 0. In the above python code we have used re.findall() method to find all the matching patterns and return the values.