Regex, split and Python

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Can anybody help me to understand what those lines are doing ?

reg = re.compile(r"(%s.*?%s|%s.*?%s)" % ( '{{','}}') )
reg.split('blablabla hello world {{var}} \n blablabla')

I don't understand the % on the regex expression. And why we split on reg variable expression.

asked 55 secs ago

user3453437

1