Python: How does the return statement work?

In summary, The conversation is about a problem with printing the value of x inside a function in a Python program. The person tried to use "print function(4)" and "print function(x)" but both resulted in an error message. They are advised to use "print(function(4))" or assign the function to a variable and then print it. They also mention that they are using Python 2.4.3.
  • #1
jumbogala
423
4

Homework Statement


I am trying to write a program in which I have a function that uses the variable x.

For example,
def function(x):
x=x+2
return x

function(4)

Now I want to print out what x was inside the function. I thought I would just say
"print function(4)", but it's giving me an error message. "print function(x)" doesn't work either.

What am I doing wrong?
 
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  • #2
Are you using python 3?
The print statement was changed into a function so it would now be
print(function(4))
You can also do something like
answer = function(4)
print(answer)
 
  • #3
No, I'm using python 2.4.3, I think I get the idea though.
 
  • #4
jumbogala said:
I thought I would just say
"print function(4)", but it's giving me an error message.
It works for me. What was the error message?
 

Related to Python: How does the return statement work?

What is the purpose of the return statement in Python?

The return statement is used to exit a function and return a value to the calling function. It essentially stops the execution of the current function and passes the value back to the caller.

Can a return statement be used in any type of function in Python?

Yes, a return statement can be used in any type of function in Python, including user-defined functions, built-in functions, and lambda functions.

What happens if a return statement is not used in a function?

If a return statement is not used in a function, the function will automatically return the value None. This essentially means that the function does not return any value.

Can a return statement return multiple values in Python?

Yes, a return statement can return multiple values in Python by separating them with commas. These values will be returned as a tuple.

Is it necessary to use a return statement in every function in Python?

No, it is not necessary to use a return statement in every function in Python. If a function does not need to return any value, a return statement can be omitted.

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