Python字符串| strip（）-yiteyi-C++库

strip（） 是Python编程语言中的一个内置函数，它返回一个删除了前导字符和尾随字符的字符串副本（基于传递的字符串参数）。 语法：

null

string.strip([chars])Parameter: There is only one optional parameter in it:1)chars - a string specifying the set of characters to be removed. If the optional chars parameter is not given, all leading and trailing whitespaces are removed from the string.Return Value:Returns a copy of the string with both leading and trailing characters removed.

Python3

                         # Python3 program to demonstrate the use of                       
                         # strip() method                       
           
                         string                                     =                                     """    geeks for geeks    """                       
           
                         # prints the string without stripping                       
                         print                                     (string)                       
           
                         # prints the string by removing leading and trailing whitespaces                       
                         print                                     (string.strip())                       
           
                         # prints the string by removing geeks                       
                         print                                     (string.strip(                                     ' geeks'                                     ))                       

输出：

    geeks for geeks     geeks for geeksfor

Python3

                         # Python Program to demonstrate use of strip() method                       
           
                         str1                                     =                                     'geeks for geeks'                       
                         # Print the string without stripping.                       
                         print                                     (str1)                       
           
                         # String whose set of characters are to be                       
                         # remove from original string at both its ends.                       
                         str2                                     =                                     'ekgs'                       
           
                         # Print string after stripping str2 from str1 at both its end.                       
                         print                                     (str1.strip(str2))                       

输出：

geeks for geeks for

上述代码的使用：我们首先构造一个字符串str1=’geeks for geeks’ 现在我们在str1上调用strip方法，并将str2=’ekgs’作为参数传递。现在python解释器从左边跟踪str1。如果str1存在于str2中，则删除该字符。否则它将停止跟踪。现在python解释器从右边跟踪str1。如果str1存在于str2中，则删除该字符。否则它将停止跟踪。现在它终于返回结果字符串。当我们在没有参数的情况下调用strip（）时，它会删除前导空格和尾随空格。

Python3

                         # Python Program to demonstrate use of strip() method without any argument                       
                         str1                                     =                                     """    geeks for geeks    """                       
           
                         # Print the string without stripping.                       
                         print                                     (str1)                       
           
                         # Print string after removing all leading                       
                         # and trailing whitespaces.                       
                         print                                     (str1.strip())                       

输入：

    geeks for geeks

输出：

geeks for geeks

实际应用： 给定一个字符串，从开头和结尾删除单词“the”的出现。

python

                         # Python3 program to demonstrate the practical application                       
                         # strip()                       
           
           
                         string                                     =                                     " the King has the largest army in the entire world the"                       
           
                         # prints the string after removing the from beginning and end                       
                         print                                     (string.strip(                                     " the"                                     ))                       

输入：

the King has the largest army in the entire world the

输出：

King has the largest army in the entire world

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