Autocomplete for Python in Codemirror?

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I am trying to set up an autocomplete feature for Codemirror for the Python language. Unfortunately, it seems that Codemirror only includes the files necessary for Javascript key term completion.

Has anyone built Python hint file for CodeMirror similar to the JavaScript Version?

(Edit for future reference: link to similar question on CodeMirror Google Group)

I start the python autocomplete with a js based on pig-hint from codemirror 3.

You can get the python-hint.js from here.

to work, you need in your html:

  1. include simple-hint,js and python-hint.js, simple-hint.css plus codemirror.js

  2. add this script:

    CodeMirror.commands.autocomplete = function(cm) {
         CodeMirror.simpleHint(cm, CodeMirror.pythonHint);

python-hint.js is a basic js I have created today and not reviewed in depth.

Autocomplete Demo, Defaults to one normal indentation unit. Advanced Configuration Options: Usefull for superset of python syntax like Enthought enaml, IPython magics and  CodeMirror. Home; Manual; Code. Autocomplete. Autocomplete Demo Press ctrl-space to activate autocompletion. Built on top of the show-hint and javascript-hint

I'm the original author of the Python parser for Codemirror (1 and 2). You are correct that the Python parser does not offer enough information for autocomplete. I tried to build it into the parser when Codemirror 2 came around but it proved too difficult for my JS skills at the time.

I have far more skills now but far less time. Perhaps someday I'll get back to it. Or if someone wants to take it up, I would be glad to help.

Python mode, This tutorial will show you how to use autocomplete addon in Codemirror. User can activate Duration: 1:18 Posted: Jul 5, 2016 Demo page for this addon in Codemirror Official Site. fullscreen: Adds a fullscreen feature which will switch to fullscreen when F11 key is pressed inside the editor. Demo page for this addon in Codemirror Official Site. markselection: Adds a different styling to the selected text in the editor. Demo page for this addon in Codemirror Official Site.

Add python-hint.js, show-hint.js, show-hint.css. Then

var editor = CodeMirror.fromTextArea(your editor instance codes here;

editor.on('inputRead', function onChange(editor, input) {
    if (input.text[0] === ';' || input.text[0] === ' ' || input.text[0] === ":") {
        hint: CodeMirror.pythonHint

Codemirror Tutorial - Part 5: Enable Autocomplete, Get code examples like "codemirror hint on every key" instantly right from your google CodeMirror.commands.autocomplete = function (cmeditor) { 'python' is not recognized as an internal or external command, operable  CODEMIRROR_JS_VAR_FORMAT. A format string interpolated with the form field name to name a global JS variable that will hold the CodeMirror editor object. For example with CODEMIRROR_JS_VAR_FORMAT = "%s_editor" and a field named ‘code’, the JS variable name would be

< script >
    var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        mode: {
            name: "python",
            version: 3,
            singleLineStringErrors: false
        lineNumbers: true,
        indentUnit: 4,
        extraKeys: {
            "Ctrl-Space": "autocomplete"
        matchBrackets: true
CodeMirror.commands.autocomplete = function (cm) {
        CodeMirror.simpleHint(cm, CodeMirror.pythonHint);


add intellisense · Issue #3 · Almenon/AREPL-electron · GitHub, There is a nice example at StackOverflow in case you are still stuck - CodeMirror AutoComplete Custom List Basically, you can extend the functionality to  The config CODEMIRROR_THEME is optional and is used to style your TextArea using css from CodeMirror website. The config CODEMIRROR_ADDONS is optional and can enable many cool options see Codemirror Addons for available addons. Finally, the template needs the support Javascript code added, by calling codemirror.include_codemirror():

You can initialize this way also, adding extraKeys parameter to CodeMirror initialization:

CodeMirror(function(elt) {
        myTextArea.parentNode.replaceChild(elt, myTextArea);
    }, {
        mode: "python",
        lineNumbers: true,
        autofocus: true,
        extraKeys: {"Ctrl-Space": "autocomplete"}

codemirror hint on every key Code Example, /addon/hint/python-hint.js. JavaScript | 102 lines | 80 code | 16 blank | 6 comment | 31 complexity  This is a simple demonstration of the Python syntax highlighting module for CodeMirror. Features of this parser include: Token-based syntax highlighting - currently very little lexical analysis happens. Few lexical errors will be detected.

What are good ways to implement auto-complete in codemirror , Gift CodeMirror is a versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number  When I debug it it jumps into the autoComplete, calls codeMirror.showHint but the popup does not appear. This comment has been minimized. Sign in to view. Copy

python-hint.js, CodeMirror is a versatile text editor implemented in JavaScript for the browser. codemirror options like field mode, theme, addons, lint, autocomplete, Puppet (​mode:puppet), Python (mode:phyton), Q (mode:q), R (mode:r). cm-inline-complete: A CodeMirror autocomplete plugin. Inspired by Chrome's devtools (and I read their source code to solve some of this), an inline, as-you-type, autocomplete for CodeMirror. Usage. Include this plugin using a script tag, require or import statement, then pass autocomplete: true to the CodeMirror creation method:

Codemirror Autocomplete - 06/2020, User manual and reference guide version 5.55.0 CodeMirror is a code-editor component that can be embedded in Web pages. The core library provides only the editor component, no accompanying buttons, auto-completion, or other IDE functionality.