import string

import langcodes

# Iterate through all 2- and 3-letter language codes, and for all languages

# that have enough data to represent their own name, show:

#

# - The original code

# - The code after normalization

# - The language's name in English

# - The language's name in that language (its autonym)

en = langcodes.get('en')

for let1 in string.ascii_lowercase:

for let2 in string.ascii_lowercase:

for let3 in [''] + list(string.ascii_lowercase):

code = let1 + let2 + let3

lcode = langcodes.get(code)

if lcode.has_name_data():

autonym = lcode.autonym()

name = lcode.language_name()

print('%-3s %-3s %-30s %s' % (code, lcode.language, name, autonym))