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Groups > comp.lang.python > #17626

Re: Text Processing

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On 20.12.2011 22:04, Nick Dokos wrote:

>>> I have a text file containing such data ;
>>>
>>>          A                B                C
>>> -------------------------------------------------------
>>> -2.0100e-01    8.000e-02    8.000e-05
>>> -2.0000e-01    0.000e+00   4.800e-04
>>> -1.9900e-01    4.000e-02    1.600e-04
>>>
>>> But I only need Section B, and I need to change the notation to ;
>>>
>>> 8.000e-02 = 0.08
>>> 0.000e+00 = 0.00
>>> 4.000e-02 = 0.04

> Does it have to be python? If not, I'd go with something similar to
>
>     sed 1,2d foo.data | awk '{printf("%.2f\n", $2);}'
>

Why sed and awk:

awk 'NR>2 {printf("%.2f\n", $2);}' data.txt

And in Python:

f = open("data.txt")
f.readline()	# skip header
f.readline()	# skip header
for line in f:
     print "%02s" % float(line.split()[1])

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Text Processing Yigit Turgut <y.turgut@gmail.com> - 2011-12-20 11:17 -0800
  Re: Text Processing Dave Angel <d@davea.name> - 2011-12-20 14:57 -0500
  Re: Text Processing Jérôme <jerome@jolimont.fr> - 2011-12-20 21:03 +0100
  Re: Text Processing Nick Dokos <nicholas.dokos@hp.com> - 2011-12-20 16:04 -0500
  Re: Text Processing Alexander Kapps <alex.kapps@web.de> - 2011-12-21 01:01 +0100
    Re: Text Processing Yigit Turgut <y.turgut@gmail.com> - 2011-12-22 03:11 -0800

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