Python Plugins (#961)

* add test and example files

* update config to include python plugins in build

* add markdown plugin

* remove full pyscript execution from pyodide

* move loading of pyscript.py from pyodide loagInterpreter to main setupVirtualEnv and add function to create python CE plugins

* add plugin class to pyscript.py

* add missing import

* fix plugin path

* add fetchPythonPlugins to PyScriptApp

* remove old comments

* fix test

* add support for python plugins beyond custom elements and add app to python namespace in main

* inject reference to PyScript app onto python plugins

* add example hook onto markdown plugin

* change plugin events logs

* remove unused PyPlugin

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* fix type import

* add docstring to fetchPythonPlugins

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* rename addPythonPlugin method

* address PR comment

* call python plugins on hooks after the interpreted is ready

* add test for event hooks and split the test in 2 separate plugins to isolte type of plugins tests

* change python plugins initialization and registration, to inject the app from app itself instead of on the plugins themselves

* handle case when plugin cannot load due to missing plugin attribute

* add test for fail scenario when a plugin module does not have a plugin attribute

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* add deprecation warning for pyscript objects loaded in global namespace

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* remove all from global scope

* remove create_custom_element from global scope

* rename create_custom_element to define_custom_element

* rename attributes in define_custom_element and add docstrings

* better handle connect event output

* add warning to py_markdown plugin

* remove debugging logs

* improve tests

* remove debugging log

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* remove unused import

* add executable shebang

* add pyodide mock module

* fmt and lint

* Update to pyodide.ffi.create_proxy per pyodide v21 api change

* Mock pyodide as package instead of mdoule

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* add __init__ to pyodide package

* Update pyscriptjs/src/plugin.ts

fix logger name

Co-authored-by: Antonio Cuni <anto.cuni@gmail.com>

* fix pyodide import but handling the diff in their API change

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* oops, conflict resolution blooper

* Fix failing integration tests

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Jeff Glass <glass.jeffrey@gmail.com>
Co-authored-by: Antonio Cuni <anto.cuni@gmail.com>
Co-authored-by: FabioRosado <fabiorosado@outlook.com>

pyscriptjs/src/utils.ts

@@ -41,8 +41,8 @@ export function ensureUniqueId(el: HTMLElement) {
     if (el.id === '') el.id = `py-internal-${_uniqueIdCounter++}`;
 }
 
-export function showWarning(msg: string, messageType: "text" | "html" = "text"): void {
-    _createAlertBanner(msg, "warning", messageType);
+export function showWarning(msg: string, messageType: 'text' | 'html' = 'text'): void {
+    _createAlertBanner(msg, 'warning', messageType);
 }
 
 export function handleFetchError(e: Error, singleFile: string) {
@@ -64,7 +64,7 @@ export function handleFetchError(e: Error, singleFile: string) {
     } else {
         errorContent = `PyScript encountered an error while loading from file: ${e.message}`;
     }
-    throw new UserError(ErrorCode.FETCH_ERROR, errorContent, "html");
+    throw new UserError(ErrorCode.FETCH_ERROR, errorContent, 'html');
 }
 
 export function readTextFromPath(path: string) {
@@ -98,10 +98,14 @@ export function getAttribute(el: Element, attr: string): string | null {
 }
 
 export function joinPaths(parts: string[], separator = '/') {
-    const res = parts.map(function(part) { return part.trim().replace(/(^[/]*|[/]*$)/g, ''); }).filter(p => p!== "").join(separator || '/');
-    if (parts[0].startsWith('/'))
-    {
-        return '/'+res;
+    const res = parts
+        .map(function (part) {
+            return part.trim().replace(/(^[/]*|[/]*$)/g, '');
+        })
+        .filter(p => p !== '')
+        .join(separator || '/');
+    if (parts[0].startsWith('/')) {
+        return '/' + res;
     }
     return res;
 }
@@ -115,6 +119,6 @@ export function createDeprecationWarning(msg: string, elementName: string): void
         }
     }
     if (bannerCount == 0) {
-        _createAlertBanner(msg, "warning");
+        _createAlertBanner(msg, 'warning');
     }
 }