Creating file from editor - Printable Version

Creating file from editor - Printable Version

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Creating file from editor - Truman - May-19-2018

I'm reading Automate boring stuff with Python and the given example of creating a file when it's not already there is this one:

baconFile = open('C:\\Python36\\kodovi\\bacon.txt', 'w')
baconFile.write('Hello world!\n')
baconFile.close()
baconFile = open('C:\\Python36\\kodovi\\bacon.txt', 'a')
baconFile.write('Bacon is not a vegetable.')
baconFile.close()
baconFile = open('C:\\Python36\\kodovi\\bacon.text')
content = baconFile.read()
baconFile.close
print(content)

the book says that "since there isn’t a bacon.txt yet, Python creates one."

But I receive an error

Error:
FileNotFoundError: [Errno 2] No such file of directory: 'C:\\Python36\\kodovi\\bacon.txt'

I'm pretty sure that there is such directory as I used it for some previous code and it worked fine. This means that Python is telling me that files cannot be created this way. Was author wrong ( which is hard for me to believe )?

RE: Creating file from editor - snippsat - May-19-2018

(May-19-2018, 09:09 PM)Truman Wrote: I'm pretty sure that there is such directory as I used it for some previous code and it worked fine.

There is problem with your directory path.
If you save code under in a folder there will be a bacon.txt in the folder where you saved your.py

with open('bacon.txt', 'w') as f:
    f.write('hello world')

A little annoying that Al Sweigart use a older way(not using with any many other stuff) to write Python,
but i shall try not to be negative Automate boring stuff is kind of okay.

RE: Creating file from editor - volcano63 - May-19-2018

(May-19-2018, 09:09 PM)Truman Wrote: the book says that "since there isn’t a bacon.txt yet, Python creates one."

The book is right

(May-19-2018, 09:09 PM)Truman Wrote: But I receive an error
Error:
FileNotFoundError: [Errno 2] No such file of directory: 'C:\\Python36\\kodovi\\bacon.txt'

And the exception occurs in the line number ...?!

(May-19-2018, 09:09 PM)Truman Wrote: I'm pretty sure that there is such directory as I used it for some previous code and it worked fine. This means that Python is telling me that files cannot be created this way. Was author wrong ( which is hard for me to believe )?

Don't be sure - check! I think you will find out that you were wrong

RE: Creating file from editor - Truman - May-19-2018

Hm, although I understand your argument have a problem in applying it to my code.
This is what I wrote:

baconFile = open('C:\\Python36\\kodovi\\bacon.txt', 'w')
with open('bacon.txt', 'w') as f:
    f.write('hello world')
baconFile.close()
with open('bacon.txt', 'w') as f:
    f.read('hello world')
content = baconFile.read()
baconFile.close()
print(content)

and got

Error:Traceback (most recent call last):
  File "C:\Python36\kodovi\files1.py", line 6, in <module>
    f.read('hello world')
TypeError: integer argument expected, got 'str'

RE: Creating file from editor - volcano63 - May-19-2018

Wrong function, maybe?

PS In line 7 your baconFile (I hate camels Wall

) is in the wrong state for reading

RE: Creating file from editor - snippsat - May-19-2018

f.read('hello world')

It's just f.read().
The point of using with open() is that the file will be closed automatically.
So trow away all close()

with open('bacon.txt', 'w') as f:
    f.write('hello world')

with open('bacon.txt') as f:
    print(f.read())

Output:
hello world

RE: Creating file from editor - Truman - May-19-2018

Thank you, this finally works

baconFile = open('C:\\Python36\\kodovi\\bacon.txt', 'w')

with open('bacon.txt', 'w') as f:
    f.write('hello world')
 
with open('bacon.txt') as f:
    print(f.read())

with open('bacon.txt', 'w') as f:
	f.write('Bacon is not a vegetable.')
with open('bacon.txt') as f:
	print(f.read())