27 lines
817 B
Python
27 lines
817 B
Python
# tag::COLUMNIZE[]
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from typing import Sequence, Tuple, Iterator
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def columnize(sequence: Sequence[str], num_columns: int = 0) -> Iterator[Tuple[str, ...]]:
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if num_columns == 0:
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num_columns = round(len(sequence) ** .5)
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num_rows, reminder = divmod(len(sequence), num_columns)
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num_rows += bool(reminder)
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return (tuple(sequence[i::num_rows]) for i in range(num_rows))
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# end::COLUMNIZE[]
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def demo() -> None:
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nato = ('Alfa Bravo Charlie Delta Echo Foxtrot Golf Hotel India'
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' Juliett Kilo Lima Mike November Oscar Papa Quebec Romeo'
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' Sierra Tango Uniform Victor Whiskey X-ray Yankee Zulu'
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).split()
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for row in columnize(nato, 4):
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for word in row:
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print(f'{word:15}', end='')
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print()
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if __name__ == '__main__':
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demo()
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