CODEWITHSUNDEEP
pythontext-files
user3617445
user3617445

Reputation: 17

opening a text file on python on a mac

I'm trying to write a program on python on mac, that allows users to search a database. Im having trouble to open,find or read the text file that is attached.

I have used:

import os
with open('a3-example-data.txt', 'r') as f:
    f.readline()
    for line in f:
        if 'Sample Text' in line:
            print "I have found it"
            f.seek(0)
            f.readline()
            for line in f:
                if 'Time Taken' in line:
                    print line
                    print ' '.join(line.split())
f.close()

and

import os
file = open("/Users/moniv/Downloads/a3-example-data(2).txt", "r" "utf8")

But keep getting an error message. Please help me :(

Upvotes: 0

Views: 3465

Answers (1)

zmo
zmo

Reputation: 24812

your code is flawed in many parts, and my guess is that the error comes when you're getting back to the main iteration, whereas you seeked back to 0, making the main iteration unsynced.

# you do not need the os module in your code. Useless import
import os

with open('a3-example-data.txt', 'r') as f:
    ### the f.readline() is only making you skip the first line.
    ### Are you doing it on purpose?
    f.readline()
    for line in f:
        if 'Sample Text' in line:
            print "I have found it"
            ### seeking back to zero,
            f.seek(0)
            ### skipping a line
            f.readline()
            ### iterating over the file again, 
            ### while shadowing the current iteration
            for line in f:
                if 'Time Taken' in line:
                    print line
                    print ' '.join(line.split()) # why are you joining what you just split?
       ### and returning to the main iteration which will get broken
       ### because of the seek(0) within
       ### does not make much sense.

### you're using the context manager, so once you exit the `with` block, the file is closed
### no need to double close it!
f.close()

so without understanding what you aim to do, here's my take on your algorithm:

import os
with open('a3-example-data.txt', 'r') as f:
    f.readline()
    for line in f:
        if 'Sample Text' in line:
            print "I have found it"
            break
    f.seek(0)
    f.readline()
    for line in f:
         if 'Time Taken' in line:
             print line

Upvotes: 3

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