import csv
from StringIO import StringIO
rows = list(csv.reader(StringIO(
'''value1,somevalue2,value3,reallylongvalue4,value5,superlongvalue6
value1,value2,reallylongvalue3,value4,value5,somevalue6''')))
widths = [max(len(row[i]) for row in rows) for i in range(len(rows[0]))]
for row in rows:
print(' | '.join(cell.ljust(width) for cell, width in zip(row, widths)))
输出：
value1 | somevalue2 | value3 | reallylongvalue4 | value5 | superlongvalue6
value1 | value2 | reallylongvalue3 | value4 | value5 | somevalue6
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