contributors_stats.py

from github import Github
import plotly.express as px
from datetime import datetime

# First create a Github instance
# using an access token
g = Github("your own token here")

repo = g.get_repo("scikit-image/scikit-image")

contributors_by_year = {}

for year in range(2009, 2021):
    commits = repo.get_commits(since=datetime(year, 1, 1), until=datetime(year, 12, 31))
    contributors = set([cm.commit.author.name for cm in commits])
    print(year, contributors)
    contributors_by_year[year] = len(contributors)

fig = px.bar(x=list(contributors_by_year.keys()), y=list(contributors_by_year.values()),
             text=list(contributors_by_year.values()), labels={'x':'year', 'y':'contributors'})
fig.update_layout(width=400, height=300)
fig.show()