def increment(x):
    x += 10
    return x

value = 5
new_value = increment(value)
print(value + new_value)

d1 = {'a': 1, 'b': 2}
d2 = {'b': 3, 'c': 4}
print(d1 | d2)

d = {'a': 1, 'b': 2, 'c': 3}
try:
    for k in d:
        del d[k]
    print(len(d))
except RuntimeError:
    print("RuntimeError")

gen = (x for x in range(5))
print(2 in gen, 2 in gen)

def add_item(val, target=[]):
    target.append(val)
    return target

print(add_item(1), add_item(2))

a = [[1, 2], [3, 4]]
b = list(a)
a[0][1] = 5
print(b[0][1])

def modify(n):
    n = n + 5
    n *= 2
    return n

x = 10
result = modify(x) + x
print(result)

print(1 in [1, 2] == True)

class A:
    def __init__(self):
        self.__x = 1
        
    def get_x(self):
        return self.__x

class B(A):
    def __init__(self):
        super().__init__()
        self.__x = 2

b = B()
print(b.get_x())

tpl = ([],)
tpl[0].extend([1, 2])
print(tpl)