Functions

Question

I'm trying to learn the functions lesson in python but I understood nothing and just skipped it can someone help

Answer 1

To make your own function, use the "def" keyword.

Try to think as we speak in English.

define my_function which takes (some arguments):
it will do this
and do that
it can print() something
and return some value to the caller

Now in real code:

def my_function(arguments):
x = arguments * 2
x = x * 10
print(arguments)
return x

my_var = my_function(10)
It prints 10 on screen because of "print(arguments)"
print(my_var) # It prints 200 because my_var called my_function with an argument 10, x = 10 * 2 becomes 20, and x * 10 = 200 and x got returned (assign to my_var) in the end.

Answer 2

The Sololearn sandbox is very odd, but something useful for analogy is that it treats the entire Python script like a function. In a regular Python interpreter (which I recommend that you use if you can), inputs don’t have to all be entered at the beginning of a program, and print statements can be run at any time as well. In the Sololearn sandbox, you pass all the inputs at the beginning, and you have the print statement spit out the result at or near the end. Functions are like that. When you call them, you pass them a bunch of arguments, then they work off in their own little scope, and when they’re done, they often return a result.

squared = pow(number, 2)

This calls built-in function pow, which takes two number arguments, and returns the first number to the power of the second. If the pow function wasn’t built in and you were defining it yourself instead, the code might look like:

def pow(num, p):
return num ** p

After a function is defined, you can call it.

Answer 3

The ** operator means “to the power of”, which I did not explain, but was there something else?

Answer 4

Realy thanks

Answer 5

But I didn't get the part about making my own function

Answer 6

Yes my dear,look at this code to understand all in Function:
https://sololearn.com/compiler-playground/cCrFc1Z9lKSp/?ref=app

Answer 7

Thx so much guys