PCEP Variable Scope and the `global` keyword 3

Question 1

What is the output?

x = 'global'
def test():
    global x
    x = 'local'
test()
print(x)

Accepted Answer

local

Answer

global x inside test() makes the assignment modify the module-level x, so it becomes 'local'.

Question 2

Can a function declare multiple names global in a single statement?

Accepted Answer

Yes: global a, b, c

Answer

A single global statement can list multiple comma-separated names: global a, b, c.

Question 3

What happens when you use the global keyword on a name that does not yet exist at module level?

Accepted Answer

Python creates the variable at module level when it is assigned inside the function

Answer

global just declares intent; the global variable is created upon the first assignment inside the function.

Question 4

What is the output of the following code?

def outer():
    x = 1
    def inner():
        x = 2
    inner()
    print(x)
outer()

Accepted Answer

1

Answer

inner() creates its own local x = 2 without nonlocal, so outer()'s x stays 1.

Question 5

Which scope level is searched LAST in the LEGB rule?

Accepted Answer

Built-in

Answer

Python searches Local → Enclosing → Global → Built-in, so Built-in is the last resort.

(PCEP) Certified Entry-Level Python Programmer Practice Test