How do I convert an IOC country code to country name?

Question

I have a pandas dataframe

import pandas as pd

s = pd.DataFrame({'ioc' : ['ESP', 'CYP', 'USA', 'ESP', 'NED']})

and I want to return

out = pd.DataFrame(
    {'ioc' : ['ESP', 'CYP', 'USA', 'ESP', 'NED'],
     'countryName' : ['Spain', 'Cyprus', 'United States of America',
                      'Spain', 'Netherlands']})

Answer 1

Use List of IOC country codes

ioc = pd.read_html('https://en.wikipedia.org/wiki/List_of_IOC_country_codes')[0]
ioc = ioc.assign(Code=ioc['Code'].str[-3:]).set_index('Code')['National Olympic Committee']

s['countryName'] = s['ioc'].map(ioc)
print(s)

# Output:
   ioc    countryName
0  ESP          Spain
1  CYP         Cyprus
2  USA  United States
3  ESP          Spain
4  NED    Netherlands