Reading Between the Lines 21.5


#1


  1. Reading between the lines

    Traceback (most recent call last):
    File "python", line 1, in
    IOError: [Errno 2] No such file or directory: 'text.txt'


Replace this line with your code. 
My code reads:
my_file = open("text.txt","r")
print my_file.readline()
print my_file.readline()
print my_file.readline()
my_file.close()


#2

@stephaniebudlender,

With
my_file = open("text.txt","r")

you are trying to open an existing file.....in read modus.....
If you use following code
you will see which files are available....
and will create the text.txt

import os
print "==show us the existing files =="
files = [f for f in os.listdir('.') if os.path.isfile(f)]
for f in files:
    print str(f)
#my_file.close()

print "== if the file doesn't exist, create one =="
if os.path.exists('text.txt'):
    print "File exists"
else:
    print "Creating the text.txt-file"
    my_file = open("text.txt", 'w')
    my_file.write("I'm the first line of the file!" +"\n")
    my_file.write("I'm the second line."+"\n")
    my_file.write("Third line here, boss."+"\n")
    my_file.close()

my_file = open("text.txt","r")
print my_file.readline()
print my_file.readline()
print my_file.readline()
my_file.close()

Reference:
== discussions / opinions ==
http://stackoverflow.com/questions/11968976/list-files-in-only-the-current-directory
http://stackoverflow.com/questions/18533621/creating-a-new-text-file-with-python
http://stackoverflow.com/questions/5214578/python-print-string-to-text-file


#3

[quote="leonhard.wettengmx.n, post:2, topic:34883"]
import os
print "==show us the existing files =="
files = [f for f in os.listdir('.') if os.path.isfile(f)]
for f in files:
print str(f)

my_file.close()

print "== if the file doesn't exist, create one =="
if os.path.exists('text.txt'):
print "File exists"
else:
print "Creating the text.txt-file"
my_file = open("text.txt", 'w')
my_file.write("I'm the first line of the file!" +"\n")
my_file.write("I'm the second line."+"\n")
my_file.write("Third line here, boss."+"\n")
my_file.close()

my_file = open("text.txt","r")
print my_file.readline()
print my_file.readline()
print my_file.readline()
my_file.close()
[/quot


#4

many thanks. this worked.