26 lines
439 B
Python
26 lines
439 B
Python
#!/usr/bin/env python3
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# coding: utf8
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"""017-print-every-two-letters-pairs.py"""
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from string import ascii_lowercase
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def main():
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"""
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:Examples:
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>>> main() # doctest: +ELLIPSIS
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aa
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ab
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...
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ba
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bb
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...
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zz
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"""
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for letter_1 in ascii_lowercase:
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for letter_2 in ascii_lowercase:
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print(f"{letter_1}{letter_2}")
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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