with mypy

.github/workflows/run-tests.yml

@@ -30,9 +30,9 @@ jobs:
           pip install -U pytest codecov pytest-cov
           pip install .
 
-      # - name: Type checking
+      - name: Type checking
-      #   run: |
+        run: |
-      #     mypy pyModeS tests
+          mypy pyModeS
 
       - name: Run tests (without Cython)
         run: |

pyModeS/__init__.py

@@ -5,8 +5,8 @@ try:
     from . import c_common as common
     from .c_common import *
 except:
-    from . import py_common as common
+    from . import py_common as common  # type: ignore
-    from .py_common import *
+    from .py_common import *  # type: ignore
 
 from .decoder import tell
 from .decoder import adsb

pyModeS/c_common.pyi

@@ -0,0 +1,29 @@
+def hex2bin(hexstr: str) -> str: ...
+def bin2int(binstr: str) -> int: ...
+def hex2int(hexstr: str) -> int: ...
+def bin2hex(binstr: str) -> str: ...
+
+
+def df(msg: str) -> int: ...
+def crc(msg: str, encode: bool = False) -> int: ...
+
+
+def floor(x: float) -> float: ...
+def icao(msg: str) -> str: ...
+def is_icao_assigned(icao: str) -> bool: ...
+
+
+def typecode(msg: str) -> int: ...
+def cprNL(lat: float) -> int: ...
+
+
+def idcode(msg: str) -> str: ...
+def squawk(binstr: str) -> str: ...
+
+
+def altcode(msg: str) -> int: ...
+def altitude(binstr: str) -> int: ...
+
+
+def data(msg: str) -> str: ...
+def allzeros(msg: str) -> bool: ...

pyModeS/decoder/__init__.py

@@ -71,12 +71,12 @@ def tell(msg: str) -> None:
             _print("CPR Longitude", cprlon)
             _print("Altitude", alt, "feet")
 
-        if tc == 29: # target state and status
+        if tc == 29:  # target state and status
             _print("Type", "Target State and Status")
             subtype = common.bin2int((common.hex2bin(msg)[32:])[5:7])
             _print("Subtype", subtype)
             tcas_operational = adsb.tcas_operational(msg)
-            types = {0: "Not Engaged", 1: "Engaged"}
+            types_29 = {0: "Not Engaged", 1: "Engaged"}
             tcas_operational_types = {0: "Not Operational", 1: "Operational"}
             if subtype == 0:
                 emergency_types = {
@@ -87,11 +87,11 @@ def tell(msg: str) -> None:
                     4: "No communications",
                     5: "Unlawful interference",
                     6: "Downed aircraft",
-                    7: "Reserved"
+                    7: "Reserved",
                 }
                 vertical_horizontal_types = {
                     1: "Acquiring mode",
-                    2: "Capturing/Maintaining mode"
+                    2: "Capturing/Maintaining mode",
                 }
                 tcas_ra_types = {0: "Not active", 1: "Active"}
                 alt, alt_source, alt_ref = adsb.target_altitude(msg)
@@ -108,7 +108,12 @@ def tell(msg: str) -> None:
                 _print("Angle Source", angle_source)
                 _print("Vertical mode", vertical_horizontal_types[vertical_mode])
                 _print("Horizontal mode", vertical_horizontal_types[horizontal_mode])
-                _print("TCAS/ACAS", tcas_operational_types[tcas_operational])
+                _print(
+                    "TCAS/ACAS",
+                    tcas_operational_types[tcas_operational]
+                    if tcas_operational
+                    else None,
+                )
                 _print("TCAS/ACAS RA", tcas_ra_types[tcas_ra])
                 _print("Emergency status", emergency_types[emergency_status])
             else:
@@ -124,14 +129,20 @@ def tell(msg: str) -> None:
                 _print("Altitude source", alt_source)
                 _print("Barometric pressure setting", baro, "millibars")
                 _print("Selected Heading", hdg, "°")
-                if not(common.bin2int((common.hex2bin(msg)[32:])[46]) == 0):
+                if not (common.bin2int((common.hex2bin(msg)[32:])[46]) == 0):
-                    _print("Autopilot", types[autopilot])
+                    _print("Autopilot", types_29[autopilot] if autopilot else None)
-                    _print("VNAV mode", types[vnav])
+                    _print("VNAV mode", types_29[vnav] if vnav else None)
-                    _print("Altitude hold mode", types[alt_hold])
+                    _print(
-                    _print("Approach mode", types[app])
+                        "Altitude hold mode", types_29[alt_hold] if alt_hold else None
-                    _print("TCAS/ACAS", tcas_operational_types[tcas_operational])
+                    )
-                    _print("LNAV mode", types[lnav])
+                    _print("Approach mode", types_29[app] if app else None)
-
+                    _print(
+                        "TCAS/ACAS",
+                        tcas_operational_types[tcas_operational]
+                        if tcas_operational
+                        else None,
+                    )
+                    _print("LNAV mode", types_29[lnav] if lnav else None)
 
     if df == 20:
         _print("Protocol", "Mode-S Comm-B altitude reply")

pyModeS/decoder/adsb.py

@@ -1,5 +1,3 @@
-# noqa
-
 """ADS-B module.
 
 The ADS-B module also imports functions from the following modules:

pyModeS/decoder/bds/bds62.py

@@ -4,8 +4,10 @@
 #   Target State and Status
 # ------------------------------------------
 
+from __future__ import annotations
 from pyModeS import common
 
+
 def selected_altitude(msg):
     """Decode selected altitude.
 
@@ -19,14 +21,19 @@ def selected_altitude(msg):
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain selected altitude, use target altitude instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain selected altitude, use target altitude instead"
+            % msg
+        )
 
     alt = common.bin2int(mb[9:20])
     alt = None if alt == 0 else (alt - 1) * 32
@@ -35,7 +42,6 @@ def selected_altitude(msg):
     return alt, alt_source
 
 
-
 def target_altitude(msg):
     """Decode target altitude.
 
@@ -50,14 +56,19 @@ def target_altitude(msg):
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain target altitude, use selected altitude instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain target altitude, use selected altitude instead"
+            % msg
+        )
 
     alt_avail = common.bin2int(mb[7:9])
     if alt_avail == 0:
@@ -94,14 +105,19 @@ def vertical_mode(msg):
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain vertical mode, use vnav mode instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain vertical mode, use vnav mode instead"
+            % msg
+        )
 
     vertical_mode = common.bin2int(mb[13:15])
     if vertical_mode == 0:
@@ -128,14 +144,19 @@ def horizontal_mode(msg):
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain horizontal mode, use lnav mode instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain horizontal mode, use lnav mode instead"
+            % msg
+        )
 
     horizontal_mode = common.bin2int(mb[25:27])
     if horizontal_mode == 0:
@@ -152,24 +173,29 @@ def selected_heading(msg):
 
     Returns:
         float: Selected heading (degree)
-    
+
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain selected heading, use target angle instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain selected heading, use target angle instead"
+            % msg
+        )
 
     if int(mb[29]) == 0:
         hdg = None
     else:
         hdg_sign = int(mb[30])
-        hdg = (hdg_sign+1) * common.bin2int(mb[31:39]) * (180/256)
+        hdg = (hdg_sign + 1) * common.bin2int(mb[31:39]) * (180 / 256)
         hdg = round(hdg, 2)
 
     return hdg
@@ -185,18 +211,23 @@ def target_angle(msg):
         int: Target angle (degree)
         string: Angle type ('Heading' or 'Track')
         string: Source ('MCP/FCU', 'Autopilot Mode' or 'FMS/RNAV')
-    
+
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain target angle, use selected heading instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain target angle, use selected heading instead"
+            % msg
+        )
 
     angle_avail = common.bin2int(mb[25:27])
     if angle_avail == 0:
@@ -210,7 +241,7 @@ def target_angle(msg):
             angle_source = "Autopilot mode"
         else:
             angle_source = "FMS/RNAV"
-        
+
         angle_type = "Heading" if int(mb[36]) else "Track"
 
     return angle, angle_type, angle_source
@@ -228,14 +259,19 @@ def baro_pressure_setting(msg):
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain barometric pressure setting" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain barometric pressure setting"
+            % msg
+        )
 
     baro = common.bin2int(mb[20:29])
     baro = None if baro == 0 else 800 + (baro - 1) * 0.8
@@ -243,7 +279,8 @@ def baro_pressure_setting(msg):
 
     return baro
 
-def autopilot(msg) -> bool:
+
+def autopilot(msg) -> None | bool:
     """Decode autopilot engagement.
 
     Args:
@@ -255,14 +292,19 @@ def autopilot(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain autopilot engagement" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain autopilot engagement"
+            % msg
+        )
 
     if int(mb[46]) == 0:
         return None
@@ -271,7 +313,8 @@ def autopilot(msg) -> bool:
 
     return autopilot
 
-def vnav_mode(msg) -> bool:
+
+def vnav_mode(msg) -> None | bool:
     """Decode VNAV mode.
 
     Args:
@@ -283,14 +326,19 @@ def vnav_mode(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain vnav mode, use vertical mode instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain vnav mode, use vertical mode instead"
+            % msg
+        )
 
     if int(mb[46]) == 0:
         return None
@@ -300,7 +348,7 @@ def vnav_mode(msg) -> bool:
     return vnav_mode
 
 
-def altitude_hold_mode(msg) -> bool:
+def altitude_hold_mode(msg) -> None | bool:
     """Decode altitude hold mode.
 
     Args:
@@ -312,14 +360,19 @@ def altitude_hold_mode(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain altitude hold mode" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain altitude hold mode"
+            % msg
+        )
 
     if int(mb[46]) == 0:
         return None
@@ -329,8 +382,7 @@ def altitude_hold_mode(msg) -> bool:
     return alt_hold_mode
 
 
-
+def approach_mode(msg) -> None | bool:
-def approach_mode(msg) -> bool:
     """Decode approach mode.
 
     Args:
@@ -342,14 +394,19 @@ def approach_mode(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain approach mode" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain approach mode"
+            % msg
+        )
 
     if int(mb[46]) == 0:
         return None
@@ -359,7 +416,7 @@ def approach_mode(msg) -> bool:
     return app_mode
 
 
-def lnav_mode(msg) -> bool:
+def lnav_mode(msg) -> None | bool:
     """Decode LNAV mode.
 
     Args:
@@ -371,14 +428,19 @@ def lnav_mode(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 0:
-        raise RuntimeError("%s: ADS-B version 1 target state and status message does not contain lnav mode, use horizontal mode instead" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 1 target state and status message does not contain lnav mode, use horizontal mode instead"
+            % msg
+        )
 
     if int(mb[46]) == 0:
         return None
@@ -388,7 +450,7 @@ def lnav_mode(msg) -> bool:
     return lnav_mode
 
 
-def tcas_operational(msg) -> bool:
+def tcas_operational(msg) -> None | bool:
     """Decode TCAS/ACAS operational.
 
     Args:
@@ -400,7 +462,9 @@ def tcas_operational(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
@@ -413,6 +477,7 @@ def tcas_operational(msg) -> bool:
 
     return tcas
 
+
 def tcas_ra(msg) -> bool:
     """Decode TCAS/ACAS Resolution advisory.
 
@@ -425,14 +490,19 @@ def tcas_ra(msg) -> bool:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain TCAS/ACAS RA" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain TCAS/ACAS RA"
+            % msg
+        )
 
     tcas_ra = True if int(mb[52]) == 1 else False
 
@@ -462,13 +532,18 @@ def emergency_status(msg) -> int:
     """
 
     if common.typecode(msg) != 29:
-        raise RuntimeError("%s: Not a target state and status message, expecting TC=29" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, expecting TC=29" % msg
+        )
 
     mb = common.hex2bin(msg)[32:]
 
     subtype = common.bin2int(mb[5:7])
 
     if subtype == 1:
-        raise RuntimeError("%s: ADS-B version 2 target state and status message does not contain emergency status" % msg)
+        raise RuntimeError(
+            "%s: ADS-B version 2 target state and status message does not contain emergency status"
+            % msg
+        )
 
     return common.bin2int(mb[53:56])

pyModeS/decoder/ehs.py

@@ -30,6 +30,6 @@ def BDS(msg):
 
 
 def icao(msg):
-    from pyModeS.decoder.common import icao
+    from . import common
 
-    return icao(msg)
+    return common.icao(msg)

pyModeS/extra/rtlreader.py

@@ -4,7 +4,7 @@ import numpy as np
 import pyModeS as pms
 
 try:
-    import rtlsdr
+    import rtlsdr  # type: ignore
 except:
     print("------------------------------------------------------------------------")
     print("! Warning: pyrtlsdr not installed (required for using RTL-SDR devices) !")