Creating bins of years in python pandas such that it shows all the available data against that bin in the next cell. e.g 1920-1940

Question

import pandas as pd
import csv
df=pd.read_csv(\'/content/admissions.csv\')
db=df.replace(\'---\',\'0\')
data=pd.DataFrame(db)
data.columns
data[\'Total\'] = data[\'Total