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December 24, 2015 18:59
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Converts an absolute column number to an excel column notation (A - XFD).
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| def col2letter(col): | |
| if col > 0 and col <= 16384: | |
| a1 = chr((col / 26 ** 2) + 64) * (col > 26 ** 2) | |
| a2 = chr(((col % 26 ** 2) / 26 - (not col % 26)) + 64) * (col > 26) | |
| a3 = chr((col % 26 + (26 * (not col % 26))) + 64) | |
| return ''.join((a1, a2, a3)) |
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