题解 | #字符类型计数#

str = input()
count_alpha = 0
count_alnum = 0
count_space = 0
count_other = 0
for i in str:
    if(i.isalpha()):
        count_alpha += 1
    elif(i.isalnum()):
        count_alnum += 1
    elif(i.isspace()):
        count_space += 1
    else:
        count_other += 1
         
print(f"alpha: {count_alpha}")
print(f"digit: {count_alnum}")
print(f"space: {count_space}")
print(f"other: {count_other}")