A single line of Python's powerful features

The program that can print out its own code is called Quine.

Here is a line of Python quine:

_= ' _=%r;print _%%_ ';p rint _%_

Some people say that there is a semicolon does not count a line, no semicolon version:

Print (Lambda x:x+str ((x,))) (' Print (lambda x:x+str ((x,)) ') ')

In fact, if you use the name of the program language +quine as the keyword to search, you can find a variety of language implementation of the Quine. For advocates of various languages, it is important to write an elegant quine, similar to the fact that each new language implements a bootstrap (compiler, interpreter) in the language itself to be presentable.

If you think that writing a simple quine can satisfy programmers, you are too young:

Github-mame/quine-relay:an Uroboros program with programming languages

This repo implements a quine ring in 100 languages:

I'll ask you, do you abuse?

A single line of Python's powerful features