Задачи по Python и машинному обучению

class A:
    def __getitem__(self, i):
        return i
a = A()
a.__getitem__ = lambda i: i**2

print(a[4])

S = 'abcdef'
print(S.islower() + S.lower().isalpha() + S.isupper())

class A:
    def __init__(self, x):
        self.x = x
    def __getattribute__(self, name):
        if name == '__add__':
            self.x *= 10
        return object.__getattribute__(self, name)
    def __add__(self, other):
        return self.x + other.x

a1 = A(2)
a2 = A(3) 
print(a1 + a2, a1.__add__(a2))

a = 1 * 1
b = 1 / 1
print(a == 1, b == 1, a is 1, b is 1)

class MyList(list):
    def __getitem__(self, index):
        if type(index) is slice:
            index = slice(index.start - 1, index.stop - 1, index.step)
        elif type(index) is int:
            index -= 1
        return list.__getitem__(self, index)

l = MyList(["one", "two", "three", "four", "five", "six"])

print(l[1], l[-1], l[0], l[2:4])

def f(n):
    s = 0
    for i in range(n):
        s += i
        s += ~i
    return s
print(f(1) + f(10) + f(100))

False ** False + True * 2 + ([] or (True + False))

"".join(chr(i) if i % 2 else chr(i).upper() for i in range(ord('a'), ord('e')))

S = 'Hello, Max!'.isalnum()
try:
    10/S
except:
    print('Buy, Max')
else:
    print('See you tomorrow')

print(isinstance(True, int), isinstance(True, bool))

-7 % 3 + 7 % 3

class M:
    def __str__(self):
        return str(self.__dict__)

class A:
    def __init__(self):
        self.x = 1
        
class B(A, M):
    def __init__(self):
        super().__init__()
        self.y = 2
b = B()
print(b)

from abc import ABC
class L(ABC): pass
# ваш код
print(issubclass(tuple, L))

-2 % 9

class A: pass
class B: pass
def f(cls, *args):
    return cls(*args)
a = f(A)
b = f(B)