Question

how to open and print a txt in python.?
code：
from sys import argv
script, filename = argv
txt = open(filename)
print "Here's your file %r:" % filename
print txt.read()
but it does no work..

Answer 1

look first of all when you open a file you need to specifiy the mode
e.g f = open(filename, mode)
modes are 'r+' , 'r' etc.
so in your case 'r' mode will be best

Answer 2

@camouflage Did this solved your problem ?

Answer 3

@harsimran_hs4 but how can python find my txt..giving it the path ? or only the file name .

Answer 4

if you file and script are in the same folder then filename would do (eg. abc.txt) otherwise you need to specify full path

Answer 5

*your file

Answer 6

when you are done with a file, make sure you close it.

looks like you are trying to use string formatting - yo might want to look at the docs and play around with it a bit in a shell:
http://docs.python.org/2.7/library/stdtypes.html#str.format
http://docs.python.org/2.7/library/stdtypes.html#string-formatting
http://docs.python.org/2.7/library/string.html#formatstrings
http://docs.python.org/2.7/library/stdtypes.html#string-formatting
http://python.net/~goodger/projects/pycon/2007/idiomatic/handout.html#string-formatting

http://dpaste.com/1305383/

Answer 7

@camouflage it would be better if you show the code

Answer 8

@harsimran_hs4 my code is on the above ..it tells me that the name of the file is not defined

Answer 9

what are you giving for filename in command prompt

Answer 10

@harsimran_hs4 oh i gives it test1. it tells no such file

Answer 11

is your file in the same folder ?
if yes:
give test1.txt
else:
give full path

Answer 12

harsimran_hs4 i try both .but...can u give me ur code piture..thank u ..

Answer 13

run using
python test.py test.txt

Answer 14

oh .thank u very much. i knew

Answer 15

Welcome!!