[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/spikeinterface/preprocessing/filter.py

@@ -301,6 +301,7 @@ def __init__(self, recording, freq_max=300.0, margin_ms=5.0, dtype=None, **filte
         self._kwargs = dict(recording=recording, freq_max=freq_max, margin_ms=margin_ms, dtype=dtype.str)
         self._kwargs.update(filter_kwargs)
 
+
 class NotchFilterRecording(BasePreprocessor):
     """
     Parameters
@@ -358,6 +359,7 @@ def __init__(self, recording, freq=3000, q=30, margin_ms=5.0, dtype=None):
 highpass_filter = define_function_from_class(source_class=HighpassFilterRecording, name="highpass_filter")
 lowpass_filter = define_function_from_class(source_class=LowpassFilterRecording, name="lowpass_filter")
 
+
 def causal_filter(
     recording,
     direction="forward",
@@ -428,6 +430,7 @@ def causal_filter(
 highpass_filter.__doc__ = highpass_filter.__doc__.format(_common_filter_docs)
 lowpass_filter.__doc__ = lowpass_filter.__doc__.format(_common_filter_docs)
 
+
 def fix_dtype(recording, dtype):
     if dtype is None:
         dtype = recording.get_dtype()