Freeze Python dependencies with pip freeze -l (#1322)

* Freeze Python dependencies with 'pip freeze -l' * Freeze common dependencies; add section to README
PiSCSI · Nov 9, 2023 · bd33f66 · bd33f66
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diff --git a/python/README.md b/python/README.md
@@ -6,15 +6,25 @@ packages that are shared among the clients.
 The following paragraphs in this README contain instructions that are shared 
 among all Python apps.
 
-## Supported Python interpreter
+## Supported Python interpreters
 
 The policy in this project is to support the Python 3 interpreter that comes 
-standard with the current stable, as well as previous stable release of Debian.
+standard with the current stable, as well as the previous stable releases of Debian.
 
 At the time of writing they are:
 - Python 3.11 in [Debian Bookworm](https://packages.debian.org/bookworm/python3)
 - Python 3.9 in [Debian Bullseye](https://packages.debian.org/bullseye/python3)
 
+## Dependencies
+
+We use 'pip freeze' to manage explicit Python dependencies in this project.
+After adding new or bumping the versions of Python dependencies,
+please run the following command in the requisite subdir commit the results:
+
+```
+pip freeze -l > requirements.txt
+```
+
 ## Static analysis and formatting
 
 The CI workflow is set up to check code formatting with `black`,

diff --git a/python/common/requirements.txt b/python/common/requirements.txt
@@ -1,3 +1,7 @@
+certifi==2023.7.22
+charset-normalizer==3.3.2
+idna==3.4
 protobuf==3.19.5
 requests==2.31.0
+urllib3==2.0.7
 vcgencmd==0.1.1
diff --git a/python/oled/requirements.txt b/python/oled/requirements.txt
@@ -1,4 +1,15 @@
+Adafruit-Blinka==8.24.0
+adafruit-circuitpython-busdevice==5.2.6
+adafruit-circuitpython-framebuf==1.6.4
+adafruit-circuitpython-requests==2.0.2
 adafruit-circuitpython-ssd1306==2.12.11
+adafruit-circuitpython-typing==1.9.5
+Adafruit-PlatformDetect==3.53.0
+Adafruit-PureIO==1.1.11
 Pillow==10.0.1
 protobuf==3.20.2
-unidecode==1.3.6
+pyftdi==0.55.0
+pyserial==3.5
+pyusb==1.2.1
+typing_extensions==4.8.0
+Unidecode==1.3.6
diff --git a/python/web/requirements.txt b/python/web/requirements.txt
@@ -1,10 +1,17 @@
+Babel==2.13.1
 bjoern==3.2.2
+blinker==1.6.3
+charset-normalizer==2.1.1
+click==8.1.7
 Flask==3.0.0
+flask-babel==4.0.0
+itsdangerous==2.1.2
 Jinja2==3.1.2
+MarkupSafe==2.1.3
 protobuf==3.20.2
+pytz==2023.3.post1
 requests==2.31.0
 simplepam==0.1.5
-flask_babel==4.0.0
 ua-parser==0.16.1
 vcgencmd==0.1.1
-werkzeug==3.0.1
+Werkzeug==3.0.1