Python程序通过给定的字符串列表拆分字符串

给定一个字符串列表。任务是通过给定的字符串。

Input : test_str = ‘geekforgeeksbestforgeeks’, sub_list = [“best”] 
Output : [‘geekforgeeks’, ‘best’, ‘forgeeks’] 
Explanation : “best” is extracted as different list element.

Input : test_str = ‘geekforgeeksbestforgeeksCS’, sub_list = [“best”, “CS”] 
Output : [‘geekforgeeks’, ‘best’, ‘forgeeks’, “CS”] 
Explanation : “best” and “CS” are extracted as different list element. 
 

方法：使用 re.split() + |运算符

在此，我们使用正则表达式 split() 和 | 执行拆分任务。运算符来检查所有需要单独放置的单词。

Python3

# Python3 code to demonstrate working of 
# Separate specific Strings
# Using re.split() + | operator
import re
  
# initializing string
test_str = 'geekforgeeksisbestforgeeks'
  
# printing original String
print("The original string is : " + str(test_str))
  
# initializing list words 
sub_list = ["best"]
  
# regex to for splits()
# | operator to include all strings 
temp = re.split(rf"({'|'.join(sub_list)})", test_str)
res = [ele for ele in temp if ele] 
  
# printing result 
print("The segmented String : " + str(res))

输出

The original string is : geekforgeeksisbestforgeeks
The segmented String : ['geekforgeeksis', 'best', 'forgeeks']