Re: [Tutor] 'open' is not defined

[ltc.hotspot]

Hi Emile,


I hope this answers your question?


Question: How do I remove each duplicate line output?







Here is the raw data code:




fname = raw_input("Enter file name: ")
if len(fname) < 1 : fname = "mbox-short.txt"
fh = open(fname)
count = 0
for line in fh:
    if not line.startswith('From'): continue
    line2 = line.strip()
    line3 = line2.split()
    line4 = line3[1]
    print line4
    count = count + 1            
print "There were", count, "lines in the file with From as the first word"




The problem is in the output results:




Python 2.7.10 |Anaconda 2.3.0 (64-bit)| (default, May 28 2015, 16:44:52) 

[MSC v.1500 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.




IPython 3.2.0 -- An enhanced Interactive Python.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.




In [1]: cd C:\Users\vm\Desktop\apps\docs\Python
C:\Users\vm\Desktop\apps\docs\Python




In [2]: %run _8_5_v_7.py
Enter file name: mbox-short.txt
stephen.marqu...@uct.ac.za
stephen.marqu...@uct.ac.za
lo...@media.berkeley.edu
lo...@media.berkeley.edu
zq...@umich.edu
zq...@umich.edu
rjl...@iupui.edu
rjl...@iupui.edu
zq...@umich.edu
zq...@umich.edu
rjl...@iupui.edu
rjl...@iupui.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
gsil...@umich.edu
gsil...@umich.edu
gsil...@umich.edu
gsil...@umich.edu
zq...@umich.edu
zq...@umich.edu
gsil...@umich.edu
gsil...@umich.edu
wagne...@iupui.edu
wagne...@iupui.edu
zq...@umich.edu
zq...@umich.edu
antra...@caret.cam.ac.uk
antra...@caret.cam.ac.uk
gopal.ramasammyc...@gmail.com
gopal.ramasammyc...@gmail.com
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
stephen.marqu...@uct.ac.za
stephen.marqu...@uct.ac.za
lo...@media.berkeley.edu
lo...@media.berkeley.edu
lo...@media.berkeley.edu
lo...@media.berkeley.edu
r...@media.berkeley.edu
r...@media.berkeley.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
There were 54 lines in the file with From as the first word




In [3]:









Regards,

Hal
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