Refined type annotations to reflect move to python>=3.7

Author: thatfloflo

eel/__init__.py

@@ -1,3 +1,4 @@
+from __future__ import annotations
 import pkg_resources as pkg
 import PyInstaller.__main__ as pyi
 import os

eel/__main__.py

@@ -1,3 +1,4 @@
+from __future__ import annotations
 import subprocess as sps
 import webbrowser as wbr
 from typing import Union, List, Dict, Iterable, Optional
@@ -51,7 +52,7 @@ def open(start_pages: Iterable[Union[str, Dict[str, str]]], options: OptionsDict
     start_urls = _build_urls(start_pages, options)
 
     mode = options.get('mode')
-    if not isinstance(mode, (str, bool, type(None))) or mode is True:
+    if not isinstance(mode, (str, type(None))) and mode is not False:
         raise TypeError("'mode' option must by either a string, False, or None")
     if mode is None or mode is False:
         # Don't open a browser

eel/browsers.py

@@ -1,6 +1,9 @@
-import sys, subprocess as sps, os
+from __future__ import annotations
+import sys
+import os
+import subprocess as sps
+from shutil import which
 from typing import List, Optional
-
 from eel.types import OptionsDictT
 
 # Every browser specific module must define run(), find_path() and name like this
@@ -57,16 +60,15 @@ def _find_chromium_mac() -> Optional[str]:
 
 
 def _find_chrome_linux() -> Optional[str]:
-    import whichcraft as wch
     chrome_names = ['chromium-browser',
                     'chromium',
                     'google-chrome',
                     'google-chrome-stable']
 
     for name in chrome_names:
-        chrome = wch.which(name)
+        chrome = which(name)
         if chrome is not None:
-            return chrome # type: ignore # whichcraft doesn't currently have type hints
+            return chrome
     return None
 
 

eel/chrome.py

@@ -1,3 +1,4 @@
+from __future__ import annotations
 import platform
 import subprocess as sps
 import sys

eel/edge.py

@@ -1,8 +1,8 @@
-#from __future__ import annotations
+from __future__ import annotations
 import sys
 import os
 import subprocess as sps
-import whichcraft as wch
+from shutil import which
 from typing import List, Optional
 
 from eel.types import OptionsDictT
@@ -20,11 +20,10 @@ def run(path: str, options: OptionsDictT, start_urls: List[str]) -> None:
 def find_path() -> Optional[str]:
     if sys.platform in ['win32', 'win64']:
         # It doesn't work well passing the .bat file to Popen, so we get the actual .exe
-        bat_path = wch.which('electron')
-        return os.path.join(bat_path, r'..\node_modules\electron\dist\electron.exe')
+        bat_path = which('electron')
+        if bat_path:
+            return os.path.join(bat_path, r'..\node_modules\electron\dist\electron.exe')
     elif sys.platform in ['darwin', 'linux']:
-        # This should work find...
-        return wch.which('electron') # type: ignore # whichcraft doesn't currently have type hints
-    else:
-        return None
-
+        # This should work fine...
+        return which('electron')
+    return None

eel/electron.py

@@ -1,28 +1,42 @@
+from __future__ import annotations
 from typing import Union, Dict, List, Tuple, Callable, Optional, Any, TYPE_CHECKING
+from typing_extensions import Literal, TypedDict, TypeAlias
+from bottle import Bottle
 
 # This business is slightly awkward, but needed for backward compatibility,
-# because Python < 3.7 doesn't have __future__/annotations, and <3.10 doesn't
-# support TypeAlias.
+# because Python <3.10 doesn't support TypeAlias, jinja2 may not be available
+# at runtime, and geventwebsocket.websocket doesn't have type annotations so
+# that direct imports will raise an error.
 if TYPE_CHECKING:
     from jinja2 import Environment
-    try:
-        from typing import TypeAlias # Introduced in Python 3.10
-        JinjaEnvironmentT: TypeAlias = Environment
-    except ImportError:
-        JinjaEnvironmentT = Environment # type: ignore
+    JinjaEnvironmentT: TypeAlias = Environment
     from geventwebsocket.websocket import WebSocket
-    WebSocketT = WebSocket
+    WebSocketT: TypeAlias = WebSocket
 else:
-    JinjaEnvironmentT = None
-    WebSocketT = Any
+    JinjaEnvironmentT: TypeAlias = Any
+    WebSocketT: TypeAlias = Any
 
-OptionsDictT = Dict[
-        str,
-        Optional[
-            Union[
-                str, bool, int, float,
-                List[str], Tuple[int, int], Dict[str, Tuple[int, int]],
-                Callable[..., Any], JinjaEnvironmentT
-            ]
-        ]
-    ]
+OptionsDictT = TypedDict(
+    'OptionsDictT',
+    {
+        'mode': Optional[Union[str, Literal[False]]],
+        'host': str,
+        'port': int,
+        'block': bool,
+        'jinja_templates': Optional[str],
+        'cmdline_args': List[str],
+        'size': Optional[Tuple[int, int]],
+        'position': Optional[Tuple[int, int]],
+        'geometry': Dict[str, Tuple[int, int]],
+        'close_callback': Optional[Callable[..., Any]],
+        'app_mode': bool,
+        'all_interfaces': bool,
+        'disable_cache': bool,
+        'default_path': str,
+        'app': Bottle,
+        'shutdown_delay': float,
+        'suppress_error': bool,
+        'jinja_env': JinjaEnvironmentT,
+    },
+    total=False
+)

eel/types.py

@@ -19,7 +19,7 @@ If you run into any issues with this example, open a [new issue](https://github.
 
 ## Quick Start
 
-1. **Configure:** In the app's directory, run `npm install` and `pip install bottle bottle-websocket future whichcraft pyinstaller`
+1. **Configure:** In the app's directory, run `npm install` and `pip install bottle bottle-websocket future pyinstaller`
 2. **Demo:** Build static files with `npm run build` then run the application with `python eel_CRA.py`. A Chrome-app window should open running the built code from `build/`
 3. **Distribute:** (Run `npm run build` first) Build a binary distribution with PyInstaller using `python -m eel eel_CRA.py build --onefile` (See more detailed PyInstaller instructions at bottom of [the main README](https://github.com/ChrisKnott/Eel))
 4. **Develop:** Open two prompts. In one, run  `python eel_CRA.py true` and the other, `npm start`. A browser window should open in your default web browser at: [http://localhost:3000/](http://localhost:3000/). As you make changes to the JavaScript in `src/` the browser will reload. Any changes to `eel_CRA.py` will require a restart to take effect. You may need to refresh the browser window if it gets out of sync with eel.

examples/07 - CreateReactApp/README.md

@@ -2,9 +2,6 @@
 python_version = 3.10
 warn_unused_configs = True
 
-[mypy-jinja2]
-ignore_missing_imports = True
-
 [mypy-gevent]
 ignore_missing_imports = True
 
@@ -23,12 +20,6 @@ ignore_missing_imports = True
 [mypy-bottle.ext.websocket]
 ignore_missing_imports = True
 
-[mypy-whichcraft]
-ignore_missing_imports = True
-
-[mypy-pyparsing]
-ignore_missing_imports = True
-
 [mypy-PyInstaller]
 ignore_missing_imports = True
 

mypy.ini

@@ -4,4 +4,4 @@ gevent
 gevent-websocket<1.0.0
 greenlet>=1.0.0,<2.0.0
 pyparsing>=3.0.0,<4.0.0
-whichcraft~=0.4.1
+typing-extensions>=4.3.0