Add type hints.

Author: JoeZiminski

src/spikeinterface/core/baserecording.py

@@ -509,7 +509,7 @@ def reset_times(self):
             rs.t_start = None
             rs.sampling_frequency = self.sampling_frequency
 
-    def shift_start_time(self, shift, segment_index=None):
+    def shift_start_time(self, shift: int | float, segment_index: int | None = None) -> None:
         """
         Shift the starting time of the times.
 
@@ -536,15 +536,14 @@ def shift_start_time(self, shift, segment_index=None):
             else:
                 rs.t_start += shift
 
-    def sample_index_to_time(self, sample_ind, segment_index=None):
-        """
-        Transform sample index into time in seconds
-        """
+    def sample_index_to_time(self, sample_ind: int, segment_index: int | None = None):
+        """ """
         segment_index = self._check_segment_index(segment_index)
         rs = self._recording_segments[segment_index]
         return rs.sample_index_to_time(sample_ind)
 
-    def time_to_sample_index(self, time_s, segment_index=None):
+    def time_to_sample_index(self, time_s: float, segment_index: int | None = None):
+        """ """
         segment_index = self._check_segment_index(segment_index)
         rs = self._recording_segments[segment_index]
         return rs.time_to_sample_index(time_s)