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#!/usr/bin/env python
# -*- coding: utf-8 -*-
def transpose_file(filename):
with open(filename, 'r') as f:
lines = f.readlines()
# Split each line into a list of fields
lines = [line.strip().split(',') for line in lines]
# Use zip() to transpose rows to columns
transposed = zip(*lines)
# Join the fields back together and write to a new file
with open('transposed_' + filename, 'w') as f:
for row in transposed:
f.write(','.join(row))
f.write('\n')
transpose_file('input.txt')
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