统计输入字符串中大写字母、小写字母、数字字符及其他字符的个数。Python

可以使用 Python 中的 isupper()、islower()、isdigit() 等函数判断字符的类型，然后统计各个类型的字符数量即可。下面是一个示例代码：

def count_chars(s):
    upper_count = 0
    lower_count = 0
    digit_count = 0
    other_count = 0
    
    for c in s:
        if c.isupper():
            upper_count += 1
        elif c.islower():
            lower_count += 1
        elif c.isdigit():
            digit_count += 1
        else:
            other_count += 1
    
    return upper_count, lower_count, digit_count, other_count

s = "Hello, World! 123"
counts = count_chars(s)
print("Uppercase count:", counts[0])
print("Lowercase count:", counts[1])
print("Digit count:", counts[2])
print("Other count:", counts[3])

输出结果为：

Uppercase count: 2
Lowercase count: 8
Digit count: 3
Other count: 4