F Семантіка Python

a = 2
b = a
b

## 2

a = 3
b

## 2

def append_element(x, element):
    x.append(element)

data = [1, 2, 3]
append_element(data, 4)
data

## [1, 2, 3, 4]

def f(x):
    x.append(3)
    return(x)

a = [1, 2]


f(a)

## [1, 2, 3]

print(a)

## [1, 2, 3]