Python String rpartition()用法及代码示例

Python String rpartition() 方法将给定字符串分成三部分。 rpartition()从右侧开始寻找分隔符，直到找到分隔符并返回一个元组，其中包含分隔符之前的字符串、分隔符之后的部分。

Python 字符串 rpartition() 方法语法

用法：  string.rpartition(separator)

示例1：Python String rpartition()方法的基本用法

这里我们演示Python String rpartition()方法的基本用法

# String need to split 
string1 = "Geeks@for@Geeks@is@for@geeks"
  
string2 = "Ram is not eating but Mohan is eating"
  
# Here '@' is a separator 
print(string1.rpartition('@')) 
  
# Here 'is' is separator 
print(string2.rpartition('is')) 

输出：

('Geeks@for@Geeks@is@for', '@', 'geeks')
('Ram is not eating but Mohan ', 'is', ' eating')

示例 2：当分隔符不存在时，对字符串使用 rpartition() 方法

Python String rpartition() 如果字符串中不存在分隔符，方法将前 2 个参数返回为空字符串

# String need to split 
string = "Sita is going to school"
  
# Here 'not' is a separator which is not 
# present in the given string 
print(string.rpartition('not')) 

输出：

('', '', 'Sita is going to school')

使用 Python 字符串时出现异常 rpartition()

类型错误：如果未提供分隔符参数，则会引发TypeError

# Python3 code explaining TypeError 
# in rpartition() 
  
string = "Bruce Waine is Batman"
  
# Nothing is passed as separator 
print(string.rpartition())

输出：

Traceback (most recent call last):
  File "/home/e207c003f42055cf9697001645999d69.py", line 7, in 
    print(str.rpartition())
TypeError: rpartition() takes exactly one argument (0 given)

ValueError：如果分隔符是空字符串，则 rpartition() 方法引发 ValueError

string = "Bruce Waine is Batman"
  
# Nothing is passed as separator 
print(string.rpartition(""))

输出：

Traceback (most recent call last):
  File "/home/c8d9719625793f2c8948542159719007.py", line 7, in 
    print(str.rpartition(""))
ValueError: empty separator