How to create json file path with variable in Python3?

Question

I am trying to write cookies to a json file.

cookies = web.get_cookies()
with open('test.json', 'w') as outputdata:
    json.dump(cookies, outputdata)
sleep(5)

Which writes cookies to test.json.

I am trying to create a cookie file for each user and each website visited such as.

cookies/{user}/{website}.json

'w' should create a file if it does not exist. But instead of the file being created I am getting error file does not exist.

I have defined the variables, printing user shows the username.

When manually creating the file such as test.json in the first example the script works.

How can I create the file at the path with variables?

Thank you

Serge Ballesta · Accepted Answer · 2021-08-08 14:27:25Z

2

'w' does create a file provided the containing directory exists.

You could ensure that the directory exists with os.makedirs:

# create directories if required without error if they exist 
#  thanks to exists_ok=True
os.makedirs(f'cookies/{users}', exist_ok=True)
with os.open(f'cookies/{users}/{website}.json':
    ...

answered Aug 8, 2021 at 14:27

Serge Ballesta

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