FIX: failing lap accuracy checks caused all laps marked inaccurate

theOehrly · Oct 19, 2023 · 871f013 · 871f013
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diff --git a/docs/changelog/v3.2.x.rst b/docs/changelog/v3.2.x.rst
@@ -13,6 +13,9 @@ Bug Fixes
 - Fix broken schedule backend 'f1timing' (failed to load 2023 season schedule
   after Qatar GP due to unexpected data)
 
+- Fix: failing lap accuracy check for one driver caused laps of all drivers to
+  be marked as inaccurate (#464)
+
 
 New Features
 ^^^^^^^^^^^^

diff --git a/fastf1/core.py b/fastf1/core.py
@@ -1929,11 +1929,15 @@ def _check_lap_accuracy(self):
                 prev_lap = lap
 
             if len(is_accurate) > 0:
-                self._laps.loc[self.laps['DriverNumber'] == drv, 'IsAccurate'] = is_accurate
+                self._laps.loc[
+                    self.laps['DriverNumber'] == drv, 'IsAccurate'
+                ] = is_accurate
             else:
-                _logger.warning("Failed to perform lap accuracy check - all "
-                                "laps marked as inaccurate.")
-                self.laps['IsAccurate'] = False  # default should be inaccurate
+                _logger.warning(f"Failed to perform lap accuracy check - all "
+                                f"laps marked as inaccurate (driver {drv})")
+                self._laps.loc[
+                    self.laps['DriverNumber'] == drv, 'IsAccurate'
+                ] = False  # default should be inaccurate
 
             # necessary to explicitly cast to bool
             self._laps[['IsAccurate']] \