繁体   English   中英

如何检查一个或多个特定字符是否为字符串?

[英]How do i check if one or more certain characters are an a string?

我想检查两个字符串是否仅使用一个if语句而不是两个包含“ \\ n”或“ \\ r”,并且有任何方法可以做到这一点,还是必须使用for循环?

我尝试了多种方式来调整if语句,但似乎无法正确处理,因此必须使用for循环还是两个if语句?

def singleline_diff_format(line1, line2, idx):
    """
    Inputs:
      line1 - first single line string
      line2 - second single line string
      idx   - index at which to indicate difference
    Output:
      Returns a three line formatted string showing the location
      of the first difference between line1 and line2.

      If either input line contains a newline or carriage return,
      then returns an empty string.

      If idx is not a valid index, then returns an empty string.
     """
    equals = "=" * (idx)
    min_length = min(len(line1), len(line2))

    if "\n" or "\r" in line1 or line2:
        return ""
    else:
        return line1 +  "\n{}^".format(equals) + "\n" + line2 

print(singleline_diff_format("abcd", "abed", 2))
print(singleline_diff_format("abcd \nhey man", "abed", 2))    
print(singleline_diff_format("abcd", "abed", 5))

我预计

A B C D

== ^

A B C D

嗨,老兄

== ^

A B C D

===== ^

但是我只是得到空字符串,这意味着if语句不能正常工作。

您可以使用任何

if any(char in line for char in ('\n',  '\r') for line in (line1, line2)):
    ....

这将是True ,如果任何4个条件中'\\n' in line1'\\n' in line2'\\r' in line1'\\r' in line2是'真-并且更加紧凑...

您的逻辑没有按照您的预期进行,当您进行匹配时,您将返回一个空字符串。 如果第1行或第2行中为“ \\ n”或“ \\ r”,则返回“”

尝试:如果(line1或line2)中的(“ \\ n”或“ \\ r”):返回f'{line1} \\ n = \\ n {line2}'

暂无
暂无

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM