题解 | #统计字符#

while True:
    try:
        a = input()
        a = list(a)
        e_word = 0
        num = 0
        space_num = 0
        other_word = 0
        for i in range(len(a)):
            if(a[i].isupper())|(a[i].islower()): #若是英文字母
                e_word += 1
            elif(a[i].isdigit()): #若是数字
                num += 1
            elif(a[i] == ' '): #若是空格
                space_num += 1
            else: #其他字符
                other_word += 1
        print(e_word)
        print(space_num)
        print(num)
        print(other_word)
    except:
        break