envfile syntax. How integers (like PORTs) should be written-CodePudding

I wonder if these configs are the same:

Config 1:

EMAIL_PORT=587
EMAIL_USE_TLS=True
EMAIL_USE_SSL=None

Config 2:

EMAIL_PORT='587'
EMAIL_USE_TLS='True'
EMAIL_USE_SSL='None'

settings.py (or just a random python file):

EMAIL_PORT = os.getenv('EMAIL_PORT')
EMAIL_USE_TLS = os.getenv('EMAIL_USE_TLS')
EMAIL_USE_SSL = os.getenv('EMAIL_USE_SSL')

Will my, let's say EMAIL_PORT in settings.py get a value of 587 or it will be '587' instead, or if EMAIL_USE_TLS will get the pythonic boolean True or 'True' instead? What is the suggestion on assigning variables in envfile? How to handler such booleans, integers or any other non-string values?

thanks!

CodePudding user response：

As mentioned in the Python Docs os.getenv will always return a str:

key, default and the result are str.

(emphasis mine)

For the port you can simply do this:

EMAIL_PORT  = int(os.getenv('EMAIL_PORT'))

But for the Boolean I would set a value of 0 or 1 in the env so you can do the following:

Config:

EMAIL_USE_TLS=1

Python:

EMAIL_USE_TLS = bool(int(os.getenv('EMAIL_USE_TLS')))

Both these methods rely on the correctness of the environment variables so you might want to add error handling.