which itertools method

[Yoriz]

import itertools

result = (itertools.product('AB', repeat=2))
result = map(''.join, result)
print(list(result))

result = (itertools.product('ABC', repeat=3))
result = map(''.join, result)
print(list(result))

Output:
['AA', 'AB', 'BA', 'BB']
['AAA', 'AAB', 'AAC', 'ABA', 'ABB', 'ABC', 'ACA', 'ACB', 'ACC', 'BAA', 'BAB', 'BAC', 'BBA', 'BBB', 'BBC', 'BCA', 'BCB', 'BCC', 'CAA', 'CAB', 'CAC', 'CBA', 'CBB', 'CBC', 'CCA', 'CCB', 'CCC']