This is a multi-line comment with docstrings If you use a docstring to comment out multiple line of code in Python, that block of code will be ignored, and only the lines outside the docstring will run. The real workaround for making multi-line comments in Python is by using docstrings. With this approach, you're technically making multiple single-line comments. To comment out multiple lines in Python, you can prepend each line with a hash ( #). Unlike other programming languages such as JavaScript, Java, and C++ which use /*.*/ for multi-line comments, there's no built-in mechanism for multi-line comments in Python. How to Make Multi-line Comments in Python # print("Hello world")Īs you can see, the commented line wasn't printed in the output. To make single-line comments in Python, prepend each line with a hash ( #). How to Make Single Line Comments in Python So in this article, I won't just show you how to make single-line comments in Python – I'll also show you the workaround for making multi-line comments. The problem is that Python doesn't have a built-in mechanism for multi-line comments. Just like other programming languages, Python supports comments. With comments, you get a better understanding of your own code, make it more readable, and can help team members understand how it works.Ĭomments are ignored by compilers and interpreters, so they don’t run.Īpart from making your code more readable, comments can also help while you're debugging – if you have two lines of code, you can comment out one to prevent it from running. ThonnyFlake8 adds warnings from flake8.Commenting is an integral part of every programming language.thonny-py5mode adds py5 support for a Processing-like creative coding environment.thonny-icontract-hypothesis adds commands for invoking icontract-hypothesis analyzer.thonny-crosshair adds commands for invoking CrossHair analyzer.thonny-onedark adds One Dark syntax theme.thonny-dracula adds Dracula syntax theme.thonny-edison allows uploading Python code to Edison educational robot.thonny-lahendus allows loading exercises from lahendus.ut.ee and submitting solutions for automatic assessment.thonny-error-explainer extends Assistant with new error checkers.thonny-ev3dev allows uploading code to EV3 (and much more).thonny-black-formatter adds a command for formatting current file with Black.thonny-gitonic adds a command for opening gitonic.Thonny has simple infrastructure for extensions. Older releases and prereleases can be found at Plug-ins Latest stable releases are linked in the download box at the top of this page. We are also grateful for the help of several contributors from the open-source community around the world. Since September 2018 development of Thonny is partially supported by Cybernetica AS.ĭevelopment of several features in Thonny 3.0 and 3.3 was proposed and supported by Raspberry Pi Foundation. Select Tools → Manage packages for even easier installation of 3rd party packages.įrom 2014 to 2018 the main development of Thonny took place in Institute of Computer Science of University of Tartu, Estonia. PATH and conflicts with other Python interpreters are taken care of by Thonny. Select Tools → Open system shell to install extra packages or learn handling Python on command line. Students can explore APIs with the help of code completion. Value) but you can switch to more realistic model (name → address/id → value). Variables are initially presented according to simplified model (name → Local variables are visually distinguished from globals. Highlighting variable occurrences reminds you that the same name doesn't always mean the same variable and helps spotting typos. Thonny's editor makes these easy to spot. Unclosed quotes and parentheses are the most common beginners' syntax errors. Good understanding of how function calls work is especially important for understanding recursion. Stepping into a function call opens a new window with separate local variables table and code You can think of this light-blue box as a piece of paper where Python replaces subexpressions with their values, piece-by-piece.įaithful representation of function calls. If you use small steps, then you can even see how Python evaluates your expressions. Steps follow program structure, not just code lines. Press F6 for a big step and F7 for a small step. ![]() Just press Ctrl+F5 instead of F5 and you can run your programs step-by-step, no breakpoints needed. Once you're done with hello-worlds, select View → Variables and see how your programs and shell commands affect Python variables. (You can also use a separate Python installation, if necessary.) The initial user interface is stripped of all features that may distract beginners. Thonny comes with Python 3.10 built in, so just one simple installer is needed and you're ready to learn programming.
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