Python String partition() 方法

Python String partition() 方法在第一次出现分隔符时拆分字符串，并返回一个元组，其中包含分隔符之前的部分、分隔符和分隔符之后的部分。这里的分隔符是一个作为参数给出的字符串。

Syntax: 

string.partition(separator)

Parameters: 

The partition() method takes a separator(a string) as the argument that separates the string at its first occurrence.

Returns: 

Returns a tuple that contains the part before the separator, separator parameter, and the part after the separator if the separator parameter is found in the string. Returns a tuple that contains the string itself and two empty strings if the separator parameter is not found. 

示例 1

Python3

string = "pawan is a good"
  
# 'is' separator is found
print(string.partition('is '))
  
# 'not' separator is not found
print(string.partition('bad '))
  
string = "pawan is a good, isn't it"
  
# splits at first occurrence of 'is'
print(string.partition('is'))

输出：

('pawan ', 'is ', 'a good')
('pawan is a good', '', '')
('pawan ', 'is', " a good, isn't it")

示例 2

Python3

string = "geeks is a good"
  
# 'is' separator is found
print(string.partition('is '))
  
# 'not' separator is not found
print(string.partition('bad '))
  
string = "geeks is a good, isn't it"
  
# splits at first occurrence of 'is'
print(string.partition('is'))

输出：

('geeks ', 'is ', 'a good')
('geeks is a good', '', '')
('geeks ', 'is', " a good, isn't it")