在python中计算字符串中的数字、字母和特殊字符

def calculate_digits(string):
    count = 0
    for char in string:
        if char.isdigit():
            count += 1
    return count

string = "abc123!@#456"
digit_count = calculate_digits(string)
print("数字个数：", digit_count)

数字个数： 6

def calculate_letters(string):
    count = 0
    for char in string:
        if char.isalpha():
            count += 1
    return count

string = "abc123!@#456"
letter_count = calculate_letters(string)
print("字母个数：", letter_count)

字母个数： 3

import re

def calculate_special_chars(string):
    special_chars = re.findall(r'[^a-zA-Z0-9\s]', string)
    return len(special_chars)

string = "abc123!@#456"
special_char_count = calculate_special_chars(string)
print("特殊字符个数：", special_char_count)

特殊字符个数： 3