human
How to decode a 'url-encoded' string in python
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Here is some code to decode a double URL encoded string 
'FireShot3%2B%25282%2529.png' to
'FireShot3+(2).png'

urllib.parse.unquote(urllib.parse.unquote('FireShot3%2B%25282%2529.png'))

#Warning: this code generation is experimental. Please inspect the code for any bugs before executing.