Question

我正在尝试编写一些允许用户输入单词的代码，但单词中的所有字母都必须是大写字母。该消息也不能包含空格或标点符号。

Answer 1

简单的尝试可能是（对于单个单词而不是数字混合） -

inp = raw_input("F:")

if inp == inp.upper():
    print "Hi"
else:
    print "please enter Upper case word"

Answer 2

Python字符串支持.isupper()和.isalpha()所以：

>>> def upperalpha(s):
...   return s.isupper() and s.isalpha()
...
>>> upperalpha('ABC')
True
>>> upperalpha('ABc')
False
>>> upperalpha('ABC1')
False
>>> upperalpha('ABC DEF')
False
>>> upperalpha('ABCDEF')
True
>>> upperalpha('ABCDEF!')
False

一个简单的输入循环可能是：

>>> while True:
...   word = input('Enter a word: ')
...   if word.isupper() and word.isalpha():
...     break
...   else:
...     print('Please enter only uppercase letters, no spaces or punctuation.')
...
Enter a word: asdf
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: asdf123
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: 123
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: ABC123
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: ABC 123
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: ABC DEF
Please enter only uppercase letters, no spaces or punctuation.
Enter a word: ABC
>>>

如何只允许将大写字母输入变量

2 个答案: