Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #38667 > unrolled thread

Re: Error in reading and writing CSV format file in python

Back to article view | Back to comp.lang.python

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: Error in reading and writing CSV format file in python MRAB <python@mrabarnett.plus.com> - 2013-02-11 12:27 +0000

#38667 — Re: Error in reading and writing CSV format file in python

On 2013-02-11 11:00, inshu chauhan wrote:
> In the programme below I am trying to read two csv format files and
> process them and write a new file with some of theirs data.
>
> import csv
> f1_reader = csv.reader(open(r"Z:\Weka
> work\Feature_Vectors_Fullset_00.arff"))
> f2_reader = csv.reader(open(r"Z:\Weka
> work\Feature_Vectors_Fullset_00_noxy+class.arff"))
> nf = open(r"Z:\Weka work\classified_image00_withoutxy.arff", "w")
>
> while True:
>      l1 = f1_reader.next()
>      while len(l1) != 12:
>          l1 = f1_reader.next()
>      l2 = f2_reader.next()
>      while len(l2) != 11:
>          l2 = f2_reader.next()
>
>      ix = l1[0].strip()
>      iy = l1[1].strip()
>      classification = l2[8].strip()
>
>      print >> nf, ix, iy, classification
>
> nf.close()
>
> This programme is giving me this error now :
>
> Traceback (most recent call last):
>    File "Z:\Weka work\final_image_classificationwithoutxy.py", line 16,
> in <module>
>      l2 = f2_reader.next()
> StopIteration
>
>
> what could be a possible reason to StopIteration ???
>
>
> I checked the syntax and usage of this module looks alright to me , but
> then why this error ?
>
It has reached the end of the file, there's no next line.

[toc] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web