python – geopy problem connection while getting the county


what I have?

I got the following df:

    id       latitude        longitude
0    0       31.23333         34.78333
1    1         nan               nan
2    2       42.70704        -71.16311
.
.
.

what I what to do?

I want to add a column with the country name if the lat/long aren’t nan:

    id       latitude        longitude     country 
0    0       31.23333         34.78333      Israel
1    1         nan               nan
2    2       42.70704        -71.16311        USA
.
.
.


what I have tried?

    df('country') = ''

    for index, row in df.iterrows():    
        print((row('latitude'), row('longitude')))
        if math.isnan(row('latitude')) or math.isnan(row('longitude')):
             continue
        else:
             geolocator = Nominatim(user_agent="row_{}".format(index))
             location = geolocator.reverse((row('latitude'), row('longitude')))
             row('country') = location.raw('address')('country')

what is the problem?

I am getting the following error:

requests.exceptions.SSLError: HTTPSConnectionPool(host='nominatim.openstreetmap.org', port=443): Max retries exceeded with url: /reverse?lat=31.23333&lon=34.78333&format=json&addressdetails=1 (Caused by SSLError(SSLCertVerificationError(1, '(SSL: CERTIFICATE_VERIFY_FAILED) certificate verify failed: self signed certificate in certificate chain (_ssl.c:1123)')))

how can I solve this problem?