d = {True: 'a', 1: 'b', False: 'c', 0: 'd'}
print(len(d))

text = "A  B"
print(len(text.split()), len(text.split(" ")))

def my_func():
    return "Hello"

my_func.custom_attr = 5
print(my_func.custom_attr)

class MetaClass(type):
    def __new__(cls, name, bases, dct):
        dct['meta_value'] = 100
        return super().__new__(cls, name, bases, dct)
    
    def __init__(cls, name, bases, dct):
        cls.meta_value += len(name)

class A(metaclass=MetaClass):
    pass

class B(metaclass=MetaClass):
    pass

print(A.meta_value + B.meta_value)

t = (1, 2, [3, 4])
t[2].append(5)
print(t)

data = {"x": 10, "y": 20}
a, b = data
print(a, b)

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

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

grades = {'Alice': 85, 'Bob': 90}
grades['Charlie'] = grades.get('Alice', 0) + 5
del grades['Alice']
print(sum(grades.values()))

print(all([]))

x = "global"
res = [x for x in ["local", "scope"]]
print(x)