Set the Python file maximum line length to 88 characters (#2122)

* flake8 --max-line-length=88

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

compression/peak_signal_to_noise_ratio.py

@@ -1,6 +1,8 @@
 """
-        Peak signal-to-noise ratio - PSNR - https://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio
-    Source: https://tutorials.techonical.com/how-to-calculate-psnr-value-of-two-images-using-python/
+Peak signal-to-noise ratio - PSNR
+    https://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio
+Source:
+https://tutorials.techonical.com/how-to-calculate-psnr-value-of-two-images-using-python
 """
 
 import math