import requests
import pandas as pd
import matplotlib.pyplot as plt

data = requests.get("https://petition.parliament.uk/petitions/241584.json").json()

df = pd.DataFrame.from_dict(data['data']['attributes']['signatures_by_constituency'])
df = df.sort_values(by='signature_count', ascending=False)
df = df.apply(lambda x: x[:40])

df.plot(kind='barh', x="name", y="signature_count", rot=0)
plt.tight_layout()
plt.gca().invert_yaxis()

plt.show()