[Tutor] Help with printing to text file
cs at zip.com.au
Mon Feb 1 18:28:58 EST 2016
On 01Feb2016 20:41, ALAN GAULD <alan.gauld at btinternet.com> wrote:
>On 01/02/16 14:07, Chelsea G wrote:
>> So I am trying to get my function search to print in a text file, but I
>> can only get it to print to Powershell. I have tried several things to get
>> it to print in its own text file but nothing I have tried is working. Can
>> someone tell me what I am doing wrong?
>> class dictionary:
>> def search(self, filename):
>> with open('weekly_test.csv', 'r') as searchfile:
>> for line in searchfile:
>> if 'PBI 43125' in line:
>> print line
>> with open('testdoc.txt', 'w') as text_file
>> text_file = searchfile
>That's because print sends its output to the standard out.
>You need to store your results somewhere (maybe in a list?) and
>then write() those results to a file.
Or, of course, open the file and tell print to write there:
with open('weekly_test.csv', 'r') as searchfile:
with open('testdoc.txt', 'w') as text_file:
It looks like you're using python 2. To use the modern print syntax above you
from __future__ import print_function
at the top of your python program. Python 3 uses the "function" form of print,
and you need the above to tell python 2 to do so.
One advantage of Alan's "put it in a list" approach is that you could separate
the seaching of the CSV into one function returning a list, and then do
whatever you want (eg print it to your file) as a wholy separate operation.
Cameron Simpson <cs at zip.com.au>
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