Update installation instructions for extra dependencies: OpenCV package

is named opencv-python; call pip as module, as suggested in the pip manual. Closes otaku42#22.
tiagocoutinho · May 19, 2023 · 398f9b3 · 398f9b3
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diff --git a/examples/qt/widget.py b/examples/qt/widget.py
@@ -4,8 +4,11 @@
 # Copyright (c) 2021 Tiago Coutinho
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
-# install requirements: pip install cv2 qtpy pyqt6
-# run with: QT_API=pyqt6 python widget.py
+# install extra requirements:
+# python3 -m pip install opencv-python qtpy pyqt6
+
+# run from this directory with:
+# QT_API=pyqt6 python widget.py
 
 import cv2
 from qtpy import QtCore, QtGui, QtWidgets

diff --git a/examples/web.py b/examples/web.py
@@ -4,6 +4,9 @@
 # Copyright (c) 2021 Tiago Coutinho
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
+# Extra dependency required to run this example:
+# python3 -m pip install flask
+
 # run from this directory with: FLASK_APP=web flask run -h 0.0.0.0
 
 import flask

diff --git a/examples/web/async.py b/examples/web/async.py
@@ -5,7 +5,8 @@
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
 # Extra dependencies required to run this example:
-# pip install fastapi jinja2 python-multipart cv2 pillow uvicorn
+# python3 -m pip install fastapi jinja2 python-multipart opencv-python \
+# pillow uvicorn
 
 # run from this directory with:
 # uvicorn async:app

diff --git a/examples/web/common.py b/examples/web/common.py
@@ -4,12 +4,6 @@
 # Copyright (c) 2023 Tiago Coutinho
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
-# Extra dependencies required to run this example:
-# pip install fastapi jinja2 python-multipart cv2 pillow uvicorn
-
-# run from this directory with:
-# uvicorn async:app
-
 """Common tools for async and sync web app examples"""
 
 import io

diff --git a/examples/web/sync.py b/examples/web/sync.py
@@ -5,7 +5,7 @@
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
 # Extra dependencies required to run this example:
-# pip install pillow cv2 flask gunicorn gevent
+# python3 -m pip install pillow opencv-python flask gunicorn gevent
 
 # run from this directory with:
 # gunicorn --bind=0.0.0.0:8000 --log-level=debug --worker-class=gevent sync:app

diff --git a/examples/web_async.py b/examples/web_async.py
@@ -5,7 +5,7 @@
 # Distributed under the GPLv3 license. See LICENSE for more info.
 
 # install dependencies with:
-# pip install uvicorn fastapi
+# python3 -m pip install uvicorn fastapi
 #
 # run from this directory with:
 # uvicorn web_async:app