Caveat: none of the solutions (including mine) deal with the case of
the field being longer than the width. You might want to throw an
exception.
Alternatively, you can just crop the results. Tweaking MRAB's
elegant solution:
field_widths = [14, 6, 18, 21, 21, 4, 6]
infile = open("input.csv")
out = open("ouptut.csv", 'w')
for fields in csv.reader(infile, delimiter='|'):
padded_fields = [
# pad, and then crop
field.ljust(width)[:width]
for field, width
in zip(fields, field_widths)
]
out.write("".join(padded_fields) + "\n")
infile.close()
out.close()
If you want them right-justified, you can use
field.rjust(width)[-width:]
-tkc
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