Python统计字符个数

输入Python3.7 is very good!
输出
字母16个
数字2个
空格3个
其他字符2个

用 Python 内置函数来实现这个功能：

string = "Python3.7 is very good!"
letter_count = 0
digit_count = 0
space_count = 0
other_count = 0

for char in string:
    if char.isalpha():
        letter_count += 1
    elif char.isdigit():
        digit_count += 1
    elif char.isspace():
        space_count += 1
    else:
        other_count += 1

print(f"字母{letter_count}个")
print(f"数字{digit_count}个")
print(f"空格{space_count}个")
print(f"其他字符{other_count}个")