how to open file in windows with python?

Question

I'm passing the file name trough sys.argv with slashes not backslashes . I'm using os.path.normpath and os.path.join but when trying to open the file I get an exception no such file or directory: and the path is with double backslashes. I'm searching for the solution for hours but nothing works.

I'v tried every tutorial I could find on google and I just keep getting the same problem. I just keep getting double back slashes. I've tried also just hardcoding the path like in example.

filepath = os.path.normpath(os.path.join('D:/dir1/dir2/dir3', 'myfile.txt'))
try:
    my_file = open(filepath, 'w+')
except Exception as e:
    print('Cannot create/open file w+!\n{}'.format(e))

I've need to be able to open the file.

can you try just: with open('D:/dir1/dir2/dir3/myfile.txt', 'w') as write_file: foo() — WiseDev
– WiseDev, Commented Jun 13, 2019 at 7:38
Beware, all the folders in the path must exist for open to succeed... — Serge Ballesta
– Serge Ballesta, Commented Jun 13, 2019 at 7:39
Don't do >> os.path.join('D:/dir1/dir2/dir3', 'myfile.txt') DO>> os.path.join('D:', 'dir1', 'dir2','dir3','myfile.txt') Using this hardcode value is not good practice — PySaad
– PySaad, Commented Jun 13, 2019 at 7:42
yeah after 2 hours of trying and failing and then starting to use slashes and then normalize I didn't had the correct path when I replaced the backslashet with slashes. After now checking again it works with normpath and join. — Sam_slo
– Sam_slo, Commented Jun 13, 2019 at 7:58

Sam_slo · Accepted Answer · 2021-05-05 11:35:43Z

2

In python scripts it works with:

file_path =  os.path.join(os.path.abspath(os.path.dirname(__file__)), 'config.ini')

But if I need to build a program with py2exe the __file__ doesn't work and I use:

file_path =  os.path.join(os.path.abspath(os.path.dirname(sys.argv[0])), 'config.ini')

Hope this helps some one.

answered May 5, 2021 at 11:35

Sam_slo

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Comments

Muhammad Ibtihaj Tahir · Accepted Answer · 2019-06-13 07:49:16Z

0

I would prefer to keep my files in a structured format where my main script will be in the root folder. This approach becomes more generic in a sense that if you try to run the same content on some other system with the different operating system, the path will raise issues.

Example

Project
  |-- main.py
  |-- files
       |--file1.txt
       |--file2.txt

Then you can simply access files by

with open("files/file1.txt", 'w+') as file_object:
    content = file_object.readlines() # Whatever the method

answered Jun 13, 2019 at 7:49

Muhammad Ibtihaj Tahir

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1 Comment

Sam_slo Over a year ago

I don't know if this will work for me because I build a exe with py2exe and then I'm executing this exe with a DB trigger EXEC master..xp_cmdshell so the working dir is not the same as the programs. Else I wouldn't use fixed paths, but absulute paths like you.

jose · Accepted Answer · 2023-06-28 06:13:10Z

0

Add r before the file path for windows.

guests = open(r"C:\folder\guests.txt","w")
initial_guests = ["Bob", "Andrea", "Manuel", "Polly", "Khalid"]

for i in initial_guests:
    guests.write(i + "\n")
    
guests.close()

edited Jun 28, 2023 at 6:13

answered Jun 27, 2023 at 14:34

jose

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