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

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

x = [0, 1]
i = 0
i, x[i] = 1, 2
print(x)

def calculate(x, y):
    if x > y:
        return x - y
    else:
        return y - x

result = calculate(10, 15) + calculate(20, 8)
print(result)

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

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

class A:
    def __new__(cls):
        return 42
        
    def __init__(self):
        print("Init")

print(A())

data = {'a': [1, 2], 'b': [3, 4]}
data['c'] = data['a'] + data['b']
data['a'].append(5)
print(len(data['c']))

funcs = [lambda: i for i in range(3)]
print(funcs[0](), funcs[-1]())

class A: pass
class B(A): pass
class C(A): pass
class D(B, C): pass
print(D.mro()[1].__name__)

d = {1: "A", True: "B", 1.0: "C"}
print(len(d), d[1])

print(any([0, "", False]))