Python implements inserting a character at a specified position in a string

This article mainly introduces the implementation of Python to insert a character at a specified position in a string. It has certain reference value. Now I share it with you. Friends in need can refer to it

As shown below:

str_1='wo shi yi zhi da da niu/n'str_list=list(str_1)
nPos=str_list.index('/')
str_list.insert(nPos,',')
str_2="".join(str_list)
print(str_2)

Extract lines from the file and insert a comma at the end of the line.

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