So, i have a simple function that just take a value and increment it. But it seems that python create new value instead of updating the reference value y.
def increment(x):
x+=1
y = 0
increment(y)
print(y) # i thought I would have 1 but got 0
while this works just fine?
def add_new(x):
x.append("new")
y = ['old']
add_new(y)
print(y) # ['old', 'new']
