pep8length.py

import matplotlib.pyplot as plt
import numpy as np
import re
from collections import defaultdict

# flake8 --select=E501 astropy/ > pep8length.txt
with open('pep8length.txt') as f:
    text = f.read()

matches = re.findall(r'astropy/(.*?)/.*.py:.*(\d\d) > 79 characters', text)

stats = defaultdict(list)
for module, count in matches:
    stats[module].append(int(count))

fig, axes = plt.subplots(4, 5, sharex=True, sharey=True)
bins = range(75, 105)
tot = []

for ax, name in zip(axes.flat, sorted(stats)):
    arr = np.array(stats[name])
    ratio = np.count_nonzero(arr < 88) / arr.shape[0] * 100
    tot += stats[name]

    ax.hist(arr, bins=bins)
    ax.set_title(f'{name}, {ratio:.0f}% < 88c')
    ax.axvline(88, lw=1, color='lightgray')

arr = np.array(tot)
below = np.count_nonzero(arr < 88)
ratio = below / arr.shape[0] * 100
fig.suptitle(f'Total: {ratio:.0f}% < 88 chars\n'
             f'{below} lines < 88 chars ({arr.shape[0]} total)')
fig.subplots_adjust()
plt.show()