如果您的用户输入的单词的第一个字母不是大写的，程序将如何终止？

Question

How do I make this program accepts only a user input that's been typed while following a proper capitalization. Like it won't accept "robin hood" unless it's "Robin Hood". When I run it, it says...

Traceback (most recent call last):
  File "C:\Users\AMD-Ryzen\Documents\PY CODEX\3.1.py", line 20, in <module>
    if x.isupper() == false:
AttributeError: 'list' object has no attribute 'isupper'

Here's my code:

#List of the movies
lst = ['Spidey', 'Castaway', 'Avengers', 'GI. JOE', 'Shallow']

#The data stored in this list will come from input("Name of movie") using .append
x=[]

print("Enter at least 5 of your favorite movies"+"\n")

#Loop to repeat the same question 5 times
for i in range(5):                  
    x.append(input("Name of movie:"))

#I used the set.intersection method to find the common elements between the two list
lst_as_set = set(lst)
intersection = lst_as_set.intersection(x)
intersection_as_lst = list(intersection)



if x.isupper() == false:
    print("It will never work out. Nice meeting you!")


elif len(intersection_as_lst) == 3:
    Ques = input("\n"+"Do you love some of his movies?:")
    if Ques == "yes":
        print("\n"+"You have", len(intersection_as_lst), "common fave movies and they are:")
        print(intersection_as_lst)
    elif Ques == "no":
        print("It will never work out. I dont like")
        s = set(x) - set(lst)
        print(s)

elif len(intersection_as_lst) == 0:
    Ques = input("Do you love some of his movies?:")
    if Ques == "yes":
        print("It will never work out. Nice meeting you!")
    else:
        print("It will never work out. Nice meeting you!")

Answer 1

You are checking if list is isupper . You'll need to do

for word in x: 
    if word.isupper() == false:
         print("It will never work out. Nice meeting you!")
         break

Answer 2

First in python it is False and not f alse. and as you want to stop the program you can raise an exception

x = list()
print("Enter at least 5 of your favorite movies\n")
for i in range(5):
    m_name = input("Name of movie: ")
    if m_name[0].islower():
        raise 'must start with an uppercase letter'
    x.append(m_name)

Answer 3

The error occurs because you are trying to apply a string method isupper() to a list. You must use a loop with the parameter:

for c in x:
    if not c.isupper():
        print("It will never work out. Nice meeting you!")
        break

Answer 4

def ìs_properly_capitalized(word: str) -> bool:
    if not word:
        return False
    return word[0].isupper() and not any([c.isupper() for c in word[1:]])


results = [ìs_properly_capitalized(word) for word in lst]

if False in results:
    print("One or more words not properly capitalized")
    sys.exit(1)