The shortest possible quine in python is just a single line of code!
In case of Python3.x
The above code is a classic use of string formatting. Firstly, we are defining a variable _ and assigning it ‘_=%r;print _%%_’. Secondly, we are printing _%_. Here we are printing _ with _ as input to string formatting. So %r in _ gets the value of _. You can even use %s instead of %r. We used double % in ‘_=%r;print _%%_’ to escape %.
But you may say that the below code is the smallest, right!
You need to note that it is indeed the smallest python program that can print its own source code but it is not a quine because a quine should not use open() function to print out its source code.
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Improved By : vivek_reddy