Question

输入："We are Testing."

输出：['We', 'Testing']

输入："Hello1 Hello2 Hello3"

输出：['Hello1', 'Hello2', 'Hello3']

如果字符串中没有这样的词，则返回'None'

有没有一种有效的方法来解决这个问题，我尝试拆分字符串，但似乎效果不佳。

Answer 1

函数以字符串为参数进行处理

def finder(string):
    words_list = string.split(' ')

    # Check if the first letter is uppercase and is alphanumerical
    # Else remove the word from list
    words_list = [i for i in words_list if i == i.capitalize() and i.isalnum()]

    return words_list

Answer 2

您可以通过列表理解来实现这一点。

def find(string):
...     s = [s for s in string.split(" ") if s[0].isupper()]
...     return s or None
...
>>> print(find("no one is here"))
None
>>> print(find("Hello world"))
['Hello']
>>> print(find("We are Testing."))
['We', 'Testing.']
>>> print(find("Hello1 Hello2 Hello3"))
['Hello1', 'Hello2', 'Hello3']

Python在字符串中查找首字母大写后跟字母数字字符的单词

2 个答案: