enable mypy type checking

.github/workflows/ci.yml

@@ -36,13 +36,17 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install flake8 pytest pytest-mock
+          pip install flake8 pytest pytest-mock mypy types-protobuf
           pip install --use-pep517 -r requirements.txt
+          mypy --install-types --non-interactive
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names
           flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
           # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=200 --statistics
+      - name: Type checking with mypy
+        run: |
+          mypy *.py
       - name: Test with pytest
         run: pytest

Pipfile

@@ -15,6 +15,8 @@ pytest = "*"
 wheel = "*"
 flake8 = "*"
 pylint = "*"
+mypy = "*"
+types-protobuf = "*"
 
 [requires]
 python_version = "3.11"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "2f4059c8dbac6be85b1e3b2c2032b884d48dc6a7fd520ffdebb951e23246a23e"
+            "sha256": "507dfa1a2ffdf56718b6f68f988b5576d8b15cadb9a43fa74edcb273dd7af0b5"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -254,6 +254,49 @@
             "markers": "python_version >= '3.6'",
             "version": "==0.7.0"
         },
+        "mypy": {
+            "hashes": [
+                "sha256:0714258640194d75677e86c786e80ccf294972cc76885d3ebbb560f11db0003d",
+                "sha256:0c8f3be99e8a8bd403caa8c03be619544bc2c77a7093685dcf308c6b109426c6",
+                "sha256:0cca5adf694af539aeaa6ac633a7afe9bbd760df9d31be55ab780b77ab5ae8bf",
+                "sha256:1c8cd4fb70e8584ca1ed5805cbc7c017a3d1a29fb450621089ffed3e99d1857f",
+                "sha256:1f7d1a520373e2272b10796c3ff721ea1a0712288cafaa95931e66aa15798813",
+                "sha256:209ee89fbb0deed518605edddd234af80506aec932ad28d73c08f1400ef80a33",
+                "sha256:26efb2fcc6b67e4d5a55561f39176821d2adf88f2745ddc72751b7890f3194ad",
+                "sha256:37bd02ebf9d10e05b00d71302d2c2e6ca333e6c2a8584a98c00e038db8121f05",
+                "sha256:3a700330b567114b673cf8ee7388e949f843b356a73b5ab22dd7cff4742a5297",
+                "sha256:3c0165ba8f354a6d9881809ef29f1a9318a236a6d81c690094c5df32107bde06",
+                "sha256:3d80e36b7d7a9259b740be6d8d906221789b0d836201af4234093cae89ced0cd",
+                "sha256:4175593dc25d9da12f7de8de873a33f9b2b8bdb4e827a7cae952e5b1a342e243",
+                "sha256:4307270436fd7694b41f913eb09210faff27ea4979ecbcd849e57d2da2f65305",
+                "sha256:5e80e758243b97b618cdf22004beb09e8a2de1af481382e4d84bc52152d1c476",
+                "sha256:641411733b127c3e0dab94c45af15fea99e4468f99ac88b39efb1ad677da5711",
+                "sha256:652b651d42f155033a1967739788c436491b577b6a44e4c39fb340d0ee7f0d70",
+                "sha256:6d7464bac72a85cb3491c7e92b5b62f3dcccb8af26826257760a552a5e244aa5",
+                "sha256:74e259b5c19f70d35fcc1ad3d56499065c601dfe94ff67ae48b85596b9ec1461",
+                "sha256:7d17e0a9707d0772f4a7b878f04b4fd11f6f5bcb9b3813975a9b13c9332153ab",
+                "sha256:901c2c269c616e6cb0998b33d4adbb4a6af0ac4ce5cd078afd7bc95830e62c1c",
+                "sha256:98e781cd35c0acf33eb0295e8b9c55cdbef64fcb35f6d3aa2186f289bed6e80d",
+                "sha256:a12c56bf73cdab116df96e4ff39610b92a348cc99a1307e1da3c3768bbb5b135",
+                "sha256:ac6e503823143464538efda0e8e356d871557ef60ccd38f8824a4257acc18d93",
+                "sha256:b8472f736a5bfb159a5e36740847808f6f5b659960115ff29c7cecec1741c648",
+                "sha256:b86ce2c1866a748c0f6faca5232059f881cda6dda2a893b9a8373353cfe3715a",
+                "sha256:bc9ec663ed6c8f15f4ae9d3c04c989b744436c16d26580eaa760ae9dd5d662eb",
+                "sha256:c9166b3f81a10cdf9b49f2d594b21b31adadb3d5e9db9b834866c3258b695be3",
+                "sha256:d13674f3fb73805ba0c45eb6c0c3053d218aa1f7abead6e446d474529aafc372",
+                "sha256:de32edc9b0a7e67c2775e574cb061a537660e51210fbf6006b0b36ea695ae9bb",
+                "sha256:e62ebaad93be3ad1a828a11e90f0e76f15449371ffeecca4a0a0b9adc99abcef"
+            ],
+            "index": "pypi",
+            "version": "==0.991"
+        },
+        "mypy-extensions": {
+            "hashes": [
+                "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d",
+                "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"
+            ],
+            "version": "==0.4.3"
+        },
         "packaging": {
             "hashes": [
                 "sha256:2198ec20bd4c017b8f9717e00f0c8714076fc2fd93816750ab48e2c41de2cfd3",
@@ -318,6 +361,22 @@
             "markers": "python_version >= '3.6'",
             "version": "==0.11.6"
         },
+        "types-protobuf": {
+            "hashes": [
+                "sha256:7df483d34ad3fcb1fa7fff1073560d596c9ac1f419cfa851b220c9a93386c998",
+                "sha256:aeefcf39d637016998b3c7b699750847071b555f7c2e0c9873d42ab6103d1a39"
+            ],
+            "index": "pypi",
+            "version": "==4.21.0.2"
+        },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:1511434bb92bf8dd198c12b1cc812e800d4181cfcb867674e0f8279cc93087aa",
+                "sha256:16fa4864408f655d35ec496218b85f79b3437c829e93320c7c9215ccfd92489e"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==4.4.0"
+        },
         "wheel": {
             "hashes": [
                 "sha256:965f5259b566725405b05e7cf774052044b1ed30119b5d586b2703aafe8719ac",

extract_otp_secret_keys.py

@@ -53,18 +53,18 @@ import urllib.parse as urlparse
 from enum import Enum
 from operator import add
 
-from qrcode import QRCode
+from qrcode import QRCode # type: ignore
 
-import protobuf_generated_python.google_auth_pb2
+import protobuf_generated_python.google_auth_pb2 # type: ignore
 
 
 try:
-    import cv2
+    import cv2 # type: ignore
     import numpy
 
     try:
-        import pyzbar.pyzbar as zbar
-        from qreader import QReader
+        import pyzbar.pyzbar as zbar # type: ignore
+        from qreader import QReader # type: ignore
     except ImportError as e:
         raise SystemExit(f"""
 ERROR: Cannot import QReader module. This problem is probably due to the missing zbar shared library.

requirements-dev.txt

@@ -3,3 +3,5 @@ pytest
 flake8
 pylint
 pytest-mock
+mypy
+types-protobuf

setup.py

@@ -1,5 +1,5 @@
 import pathlib
-from setuptools import setup
+from setuptools import setup # type: ignore
 
 setup(
     name='extract_otp_secret_keys',

upgrade_deps.sh

@@ -213,6 +213,16 @@ cmd="$FLAKE8 . --count --exit-zero --max-complexity=10 --max-line-length=200 --s
 if $interactive ; then askContinueYn "$cmd"; else echo -e "${cyan}$cmd${reset}";fi
 eval "$cmd"
 
+# Type checking
+
+cmd="mypy --install-types --non-interactive"
+if $interactive ; then askContinueYn "$cmd"; else echo -e "${cyan}$cmd${reset}";fi
+eval "$cmd"
+
+cmd="mypy *.py"
+if $interactive ; then askContinueYn "$cmd"; else echo -e "${cyan}$cmd${reset}";fi
+eval "$cmd"
+
 # Test
 
 cmd="pytest"