csv - How to .write() two items, a zero and an iterator in Python? -

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i may have simple formatting question here - hrout.write('0',i) in order add/preface 0 'i' timestamp, don't know correct syntax. code below. thank all.

hrin = open('hrsinput.csv') hrout = open('hrsoutput.csv', 'wt')  in hrin:     if len(i) < 5:             hrout.write('0', i)     else:         hrout.write(i)  hrin.close() hrout.close()

** found padding technique works. may have been tricked excel because in notepad padding shows up.

hrin = open('hrsinput.csv') hrout = open('hrsoutput.csv', 'wt')  in hrin:        hrout.write("{}\n".format(i.rstrip().zfill(5)))  hrin.close() hrout.close()

use str.format:

hrout.write('0{}'.format(i))

or remove if/else , pad:

for in hrin:        hrout.write("{}\n".format(i.rstrip().zfill(5)))

zfill add 0 times 4 characters:

in [21]: "12:33".zfill(5) out[21]: '12:33'  in [22]: "2:33".zfill(5) out[22]: '02:33'

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