错误与Python 3功课

Question

我有蟒蛇3功课要做，如果使用，ELIF，否则，.isdigit，.isalpha但我不知道为什么它不工作..

NumWord = "" 

def str_analysis(): 
    if NumWord.isalpha() == True: 
     print(NumWord, "is all alphabetical characters!") 
    elif NumWord.isdigit() == True: 
     if int(NumWord) == 100: 
      print("You found the right number!") 
     elif int(NumWord) >= 99: 
      print(NumWord, "is a pretty big number") 
     elif int(NumWord) <= 99: 
      print(NumWord, "is a smaller number than expected") 

while NumWord.isalnum() == False: 
    NumWord = input("Enter a word or integer: ") 

Answer 1

你需要实际调用你写的功能：

while NumWord.isalnum() == False: 
    NumWord = input("Enter a word or integer: ") 
str_analysis()