Python quine

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This post is a few years old now, so some details or my opinions might be out of date. I would still love to hear your feedback in the comments below. A self printing program is, as is its name, self explanatory. Today I thought about how to implement a quine in Python, I whipped up a solution on my own and then posed the challenge to some people in the office. These are the results:. This exemplifies a common way to implement a quine - the main problem is that you have to use some sort of function that prints. But of course, you also have to print that function, and so on.

Python quine

I wouldn't say this is the most boring. In Python it is certainly an empty file. It was interesting to see the author work through the major obstacles one by one when writing a quine. Glad they didn't take the actual boring route! I wish the article talked about "the most boring nonempty quine". Maybe the empty quine is not boring by virtue of the fact it's not like all of the other quines. MitPitt 11 months ago root parent prev next [—]. MitPitt 11 months ago root parent next [—]. In C it is also the empty file, though it takes some compiler settings boogaloo to make it work. Asooka 11 months ago prev next [—]. And yes, this is the most boring quine, you've punted the problem to the formatting mini-language and solved it in a manner equivalent of print open argv[0]. I would say perhaps the ideal formulation for producing an interesting quine that doesn't leverage other languages would be "write a quine in C, using no preprocessor directives and no external functions except the POSIX write function, you may assume stdout is 1".

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A quine program , or quine , is a program that outputs its own source code when run. Instead, it must compute its own source code. The trick is getting the string just right. How you do this varies from language to language depending on how variables are declared, the method of interpolation, the possible need for semicolons and newlines, the kinds of quotes required, and so on. Dealing with quotes is interesting; you need to find a way to specify that a quote character is to be printed without actually using a quote character. Note : In each of the following examples, the programs are assumed to have no newline at the end of the program text unless specified.

Add some flair to your Quine streaming graph visualizations while learning about the API at the same time. Have you ever wanted to add flair to a graph visualization but are unsure which icons Quine supports? In this blog, we explore a Python script that fetches valid icon names from the web, configures the Exploration UI, then creates a graph of icon nodes for reference. Before we start, we need to ensure that we have the necessary libraries installed. Quine supports version 2.

Python quine

Hey everyone, this is an interesting tutorial about quine in Python. Quine is a program that does not take any input and outputs its own source code. We will see how we can write a quine program in Python in this tutorial. In this tutorial, we will write a Python quine program using the constructive method. We will be using eval and repr functions in our quine. This function executes a string of python code that is passed as a parameter. See the below code. The below python is the shortest quine. Run it on your system to get the output the same as the source code given here.

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This is the classic. Article Tags :. Latest commit History 56 Commits. Calling such an empty file a quine is often considered cheating. This version while a bit cumbersome solves the quotation marks problem by just explicitly printing the ascii characters. Example C. Or write a binary quine that doesn't read it's own program memory. The trick is getting the string just right. A shorter variant, exploiting the behaviour of shebang directives:. This exemplifies a common way to implement a quine - the main problem is that you have to use some sort of function that prints. Of course, to get away with as much as possible, while making the code legal although nasty , we can just declare printf ourselves and omit the return 0. Diagonal lemma Droste effect Fixed point combinator Self-modifying code Self-interpreter Self-replicating machine Self-replication Self-relocation TiddlyWiki Tupper's self-referential formula Programming languages Quine's paradox Polyglot computing. The second half of the output is the same as the first, it repeats, so we can simplify our template a lot;. Theoretically, there is no limit on the number of languages in a multiquine. Next is a version that tries to solve this.

A quine is a computer program that takes no input and produces a copy of its own source code as its only output.

These quotes don't have to come from a quoting function. How you do this varies from language to language depending on how variables are declared, the method of interpolation, the possible need for semicolons and newlines, the kinds of quotes required, and so on. However, this macro requires the first argument to the print macro be a string literal! Hidden categories: CS1 Russian-language sources ru Articles with short description Short description is different from Wikidata Articles with example C code. In many programming languages, an empty source file is a valid program that produces no output. In other projects. Latest commit History 56 Commits. At first these cute programs seemed like an almost impossible esoteric IOCCC -tier artform crafted by programming artisans. The version that appears in several places on the web, including the Rosetta Code quine page, is a little different: it doesn't even write to standard output. This is technicallyand I stress only technicallypossible in not all but many languages, where an infinitely sized code is not explicitly disallowed. CGamesPlay 11 months ago prev next [—]. Improve Improve. Writing the Most Boring Quine rtpg. Quine Programs Quines are cool. This can include indirect access of parts of the source, like some of the early examples in this file.