Problem writing JSON to file using Python

Question

I am trying to write a JSON file to the file system using Python. When I go to read the file there's nothing there. I think I'm doing something else wrong.

This is my code:

    today = datetime.today()
    output_dir = "../../../json/iam"
    output_file = output_dir + 'pol-aws-secrets-manager-' + user_name + today +'.json'
    policy_doc = {"blah":"blah"}
    with open(output_file, 'w+') as writer:
        json.dump(policy_doc,writer)

What am I doing wrong?

Chris · Accepted Answer · 2019-03-26 15:56:51Z

5

Take a look in ../../../json/ for your files.

You're building your filenames by sticking strings together, which is very error prone. In this case you've forgotten a /, so instead of getting files like

../../../json/iam/foo.json

you're getting files like

../../../json/iamfoo.json

A much safer strategy would be to use something like os.path or pathlib.

answered Mar 26, 2019 at 15:56

Chris

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Irek · Accepted Answer · 2019-03-26 15:58:30Z

2

In addition to the response above. I tried your code and it created a file with {"blah":"blah"} without any issues.

The problem could be in the path you specified.

answered Mar 26, 2019 at 15:58

Irek

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