List of articles

• join() Method introduction
• • join() The syntax of the method is as follows ：
  • 【 example 1】 Merge the strings in the list into one string .
  • 【 example 2】 Combine strings in tuples into one string .

join() Method introduction

join() Method is also a very important string method , It is split() The inverse of method , Used to list （ Or tuples ） Multiple strings contained in are concatenated into one string .

Want to learn more split() Method reader , Can be read 《Python split() Method 》 section .
Use join() Method to merge strings , It will list （ Or tuples ） Multiple strings in are connected together with fixed separators . for example , character string “c.biancheng.net” It can be seen as passing through the separator “.” take [‘c’,‘biancheng’,‘net’] The result of merging a list into a string .

join() The syntax of the method is as follows ：

newstr = str.join(iterable)

The meanings of parameters in this method are as follows ：

• newstr： Represents the new string generated after the merge ;
• str： Used to specify the separator when merging ;
• iterable： Source string data for merge operation , Allow to list 、 Tuples and so on .

【 example 1】 Merge the strings in the list into one string .

>>> list = ['c','biancheng','net']
>>> '.'.join(list)
'c.biancheng.net'

【 example 2】 Combine strings in tuples into one string .

>>> dir = '','usr','bin','env'
>>> type(dir)
<class 'tuple'>
>>> '/'.join(dir)
'/usr/bin/env'