import pandas as pd
df = pd.read_csv('Nowcoder.csv', sep=',')
df_py = df.query('Language == "Python"')
print(df_py.Number_of_submissions.mean().round(1))

import pandas as pd
df = pd.read_csv('Nowcoder.csv', sep=',')
df_py = df.query('Language == "Python"')
print(df_py.Number_of_submissions.mean().round(1))