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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Mon, 6 Jun 2011 10:29:15 -0600
Subject: Re: how to avoid leading white spaces
To: Python <python-list@python.org>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:7093

On Mon, Jun 6, 2011 at 10:08 AM, Neil Cerutti <neilc@norwich.edu> wrote:
> import re
>
> print("re solution")
> with open("data.txt") as f:
> =A0 =A0for line in f:
> =A0 =A0 =A0 =A0fixed =3D re.sub(r"(TABLE=3D'\S+)\s+'", r"\1'", line)
> =A0 =A0 =A0 =A0print(fixed, end=3D'')
>
> print("non-re solution")
> with open("data.txt") as f:
> =A0 =A0for line in f:
> =A0 =A0 =A0 =A0i =3D line.find("TABLE=3D'")
> =A0 =A0 =A0 =A0if i !=3D -1:
> =A0 =A0 =A0 =A0 =A0 =A0begin =3D line.index("'", i) + 1
> =A0 =A0 =A0 =A0 =A0 =A0end =3D line.index("'", begin)
> =A0 =A0 =A0 =A0 =A0 =A0field =3D line[begin: end].rstrip()
> =A0 =A0 =A0 =A0 =A0 =A0print(line[:i] + line[i:begin] + field + line[end:=
], end=3D'')
> =A0 =A0 =A0 =A0else:
> =A0 =A0 =A0 =A0 =A0 =A0print(line, end=3D'')

print("non-re solution")
with open("data.txt") as f:
    for line in f:
        try:
            start =3D line.index("TABLE=3D'") + 7
            end =3D line.index("'", start)
        except ValueError:
            pass
        else:
            line =3D line[:start] + line[start:end].rstrip() + line[end:]
        print(line, end=3D'')