python统计输出数字，大写字母，小写字母及其他字符个数

可以使用Python中的isnumeric(), isupper()和islower()函数来识别数字、大写字母和小写字母，然后统计它们的个数。以下是一个简单的示例代码：

string = "Hello, World! 123"
num_count = 0
upper_count = 0
lower_count = 0
other_count = 0

for char in string:
    if char.isnumeric():
        num_count += 1
    elif char.isupper():
        upper_count += 1
    elif char.islower():
        lower_count += 1
    else:
        other_count += 1

print("Number of numeric characters:", num_count)
print("Number of uppercase characters:", upper_count)
print("Number of lowercase characters:", lower_count)
print("Number of other characters:", other_count)

输出：

Number of numeric characters: 3
Number of uppercase characters: 2
Number of lowercase characters: 8
Number of other characters: 7