Issue #3: More linting in unit tests.

tests/video/test_hand_eye.py

@@ -12,6 +12,7 @@
 import sksurgeryimage.calibration.charuco_plus_chessboard_point_detector as chpd
 import sksurgerycalibration.video as vidcal
 
+
 def test_set_model2hand_arrays():
     """Test that model2hand arrays are set without raising an error"""
     chessboard_detector = pd.ChessboardPointDetector((14, 10), 3, (1, 1))
@@ -27,6 +28,7 @@ def test_set_model2hand_arrays():
 
     stereo_calib.tracking_data.set_model2hand_arrays()
 
+
 def load_images_from_glob(glob_pattern):
     """ Load images from files based on a glob pattern. """
     images = []
@@ -49,6 +51,7 @@ def load_tracking_from_glob(glob_pattern):
 
     return tracking
 
+
 def test_handeye_calibration_mono():
     """ Load mono data (only using left channel) and tracking, do video and
     handeye calibration, compare results against expected values.
@@ -99,6 +102,7 @@ def test_handeye_calibration_mono():
     assert proj_err == pytest.approx(expected_reproj_error, rel=1e-4)
     assert recon_err == pytest.approx(expected_recon_error, rel=1e-4)
 
+
 def test_handeye_calibration_stereo():
     """ Load Stereo data and tracking, do video and
     handeye calibration, compare results against expected values.
@@ -153,6 +157,7 @@ def test_handeye_calibration_stereo():
     assert proj_err == pytest.approx(expected_reproj_error, rel=1e-4)
     assert recon_err == pytest.approx(expected_recon_error, rel=1e-4)
 
+
 def test_load_data_stereo_calib():
     """ Load tracking and image data from test directory. """
     chessboard_detector = pd.ChessboardPointDetector((14, 10), 3, (1, 1))