diff --git a/py4DSTEM/braggvectors/diskdetection_aiml.py b/py4DSTEM/braggvectors/diskdetection_aiml.py
index 2284202e4..099105538 100644
--- a/py4DSTEM/braggvectors/diskdetection_aiml.py
+++ b/py4DSTEM/braggvectors/diskdetection_aiml.py
@@ -98,7 +98,7 @@ def find_Bragg_disks_aiml_single_DP(
 
     Returns:
         (PointList): the Bragg peak positions and correlation intensities
-    """    
+    """
     if find_spec("crystal4D") is None:
         raise ImportError("Import Error: Please install crystal4D before proceeding")
     try:
@@ -251,7 +251,6 @@ def find_Bragg_disks_aiml_selected(
     """
 
     if find_spec("crystal4D") is None:
-
         raise ImportError("Import Error: Please install crystal4D before proceeding")
 
     assert len(Rx) == len(Ry)
diff --git a/py4DSTEM/process/calibration/qpixelsize.py b/py4DSTEM/process/calibration/qpixelsize.py
index 9d0c5eded..b98cd8716 100644
--- a/py4DSTEM/process/calibration/qpixelsize.py
+++ b/py4DSTEM/process/calibration/qpixelsize.py
@@ -4,7 +4,6 @@
 from scipy.optimize import leastsq
 
 
-
 def get_Q_pixel_size(q_meas, q_known, units="A"):
     """
     Computes the size of the Q-space pixels.
diff --git a/py4DSTEM/process/utils/utils.py b/py4DSTEM/process/utils/utils.py
index f77578f5a..3da90f48a 100644
--- a/py4DSTEM/process/utils/utils.py
+++ b/py4DSTEM/process/utils/utils.py
@@ -11,7 +11,9 @@
 import matplotlib.font_manager as fm
 
 from emdfile import tqdmnd
-from py4DSTEM.preprocess.utils import make_Fourier_coords2D # TODO this is defined later
+from py4DSTEM.preprocess.utils import (
+    make_Fourier_coords2D,
+)  # TODO this is defined later
 
 try:
     from IPython.display import clear_output