def addOne(value):
    print(f"addOne: PRED pridani: {value}")    
    value = value + 1
    print(f"addOne: PO pridani: {value}")

def addOneList(value):
    print(f"addOne: PRED pridani: {value}")    
    value[0] = value[0] + 1
    print(f"addOne: PO pridani: {value}")


i = 5

print(i)
addOne(i)
print(i)


i = [5]

print(i)
addOneList(i)
print(i)