variable inside of function how to use that variable outside of function in python

Question

How to use variable outside of function which is define inside of function? And Function should declare in class.

class A:
 def aFunction(self):
 aVariable = "Hello"

Now here I want to use that aVariable

• user15801675: ob=A(), print(ob.aFunction())?? Add return aVariable inside the function
• Thavas Antonio: have you tried that @Sujay?
• user15801675: Yes? I did try it

Answer 1

If you want to use this variable within the class A, how about using an instance variable?

class A: 
 def aFunction(self): 
 self.aVariable = "Hello"

Now you can use self.aVariable in another function of the same class

Answer 2

There are definitely more options that maybe others will provide, but these are the options I have come up with.

Use return

class A: 
 def aFunction(self): 
 aVariable = "Hello"
 return aVariable
obj = A()
var = obj.aFunction()
print(var)

use global

class A: 
 def aFunction(self): 
 global aVariable
 aVariable = "Hello"
obj = A()
obj.aFunction()
print(aVariable)

You can use self to your advantage

class A: 
 def __init__(self):
 self.aVariable = None
 def aFunction(self): 
 self.aVariable = "Hello"
obj = A()
obj.aFunction()
print(obj.aVariable)

• Thavas Antonio: Glad to hear. Please consider accepting the answer.
• Ravi Coder: How to consider accepting answer? I'm new in stack overflow... Just today i join
• Thavas Antonio: Under the vote count of my answer. You should see a check mark. Click that.

Answer 3

To use a variable from a class outside of the function or entire class:

class A:
 def aFunction(self):
 self.aVariable = 1
 def anotherFunction(self):
 self.aVariable += 1
a = A() # create instance of the class
a.aFunction() # run the method aFunction to create the variable
print(a.aVariable) # print the variable
a.anotherFunction() # change the variable with anotherFunction
print(a.aVariable) # print the new value 

Answer 4

There are several methods you can try.

class A:
 def aFunction(self):
 self.aVariable = "Hello"
 # you can access self.aVariable in the class

class A:
 def aFunction(self):
 aVariable = "Hello"
 return aVariable
 # use self.aFunction() whenever you need this variable

Answer 5

The return keyword will return the value provided. Here, you have provided self.aVariable. Then, you can assign the value to a variable outside the class and print the variable.

class A:
 def aFunction(self):
 self.aVariable = "Hello"
 return self.aVariable
a = A() #==== Instantiate the class
f=a.aFunction() #==== Call the function. 
print(f)

This will print: Hello

• Ravi Coder: Thanks For your Help
• user15801675: Welcome @RaviCoder. Please accept the answer if it solves your issue