CODEWITHSUNDEEP
python
delalma
delalma

Reputation: 928

Set an external variable from another Python script

I am going to try to be clear. I have a ex.py file I want to import in other py files. In the ex.py file there is a variable that I declare. However, I would like to declare that variable in the other py files.

I have a file ex.py:

variable = 5
whatever = 10 + variable

For example in an other .py file, I would have:

from ex import whatever
variable = 10
print(whatever)  # whatever object uses the variable

The result from printing whatever will be 15. I would like to have 20 as i declare variable in the new script.

That is to streamline the code so that the same .py file can be used in several other files. Any contribution please.

Upvotes: 1

Views: 709

Answers (1)

Taxel
Taxel

Reputation: 4207

If I understand you correctly, you want whatever to always be variable + 5, right? If you set whatever in the ex.py, its value is fixed to 15 and will not change. In this case you should declare a function which calculates whatever dynamically, like so:

def whatever(variable):
  return variable + 5

If you want to have multiple .py files accessing the same global variable (the other interpretation of your question I can come up with), you might want to have a look at the singleton pattern

Upvotes: 2

Related Questions