Insert other characters before each character in the Python string

background ： Posted a comment on a website , I don't know what I should not touch , The station automatically shielded me , Just the latest degree python, Think about adding... Before each character ’' Should be able to escape the clutches of automatic audit

requirement ： Precede each character of a particular string with a slash （\）

str1=‘123456abcdefg’
def fun(str):
for i in range(0, len(str), 1):
print(str[i:i + 1], ‘/’, end=‘’)
fun(str1)

Output ：
1 /2 /3 /4 /5 /6 /a /b /c /d /e /f /g /
Process finished with exit code 0

summary ： The core of the short code is to disassemble the string and output
Then I read something else to say replace() The built-in functions are troublesome and can only replace specific characters
Another one spilt（） function , yes
str.split(sep,maxsplit)
The meanings of the parameters in this method are respectively ：
str： Represents the string to be split ;
sep： Used to specify separator , Can contain multiple characters . This parameter defaults to None, Indicates all empty characters , Including Spaces 、 A newline “\n”、 tabs “\t” etc. .
maxsplit： Optional parameters , Used to specify the number of divisions , The number of substrings in the final list is at most maxsplit+1. If not specified or designated as -1, It means that there is no limit to the number of segmentation .
This method is to move the string along the original space （ Or a specific character ） Open , After using regular expressions import re String can be split along multiple specified characters
For details, please refer to the link ：
https://blog.csdn.net/sinat_38682860/article/details/80375369