CODEWITHSUNDEEP
python
yeroduk
yeroduk

Reputation: 153

Python: access a variable in a module from another file

I want to access var1 and var2 in another python file where I will be using the variables in another function. How do I do this?

file1.py

def main(x):
    var1 = "link"
    var2 = "email"

file2.py

from file1 import var1, var2
class test:
    def get_email(self):
        return var2
    def get_link(self):
        return var1

Upvotes: 0

Views: 766

Answers (2)

ATIF ADIB
ATIF ADIB

Reputation: 589

To import variables and methods from another file, you need to initialise init.py and main.py in your folder as empty files. After that you can either declare your variables you want to import on the top(outermost namespace) or return them from a function

A.py

myVar = 1
myString = “help”

def get_variables():
    myVar = 1
    myString = “help”
    return myVar, myString

B.py (first way)

from A import myVar, myString

B.py (second way)

from A import get_variables
myVar, myString = get_variables()

Upvotes: 0

Chase
Chase

Reputation: 5625

If you want to use those variables in a separate module, you need to have the variables in the top level.

var1 = ....
var2 = ....

def main(x):
    ....

This is because variables inside a function are local to that function and only accessible in it.

If you want to only declare the variables in the top level but assign within the function-

var1 = None
var2 = None

def main(x):
    global var1
    global var2
    # assign here

Remember however, variables assigned within a function will only reflect changes if that function is called. Importing a module will not automatically call the function, unless the function is called at the top level in the imported module-

var1 = None
var2 = None

def main(x):
    global var1
    global var2
    # assign here

# x should be defined prior to this
main(x)

Upvotes: 1

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