# -*- coding: utf-8 -*-
"""
Created on Sat Oct  1 19:05:50 2022

@author: Roman
"""

#append
x = [1, 2, 3]
y = []
#y=x^2
for xi in x:
    y.append(xi ** 2)
print(y)

#extend
x.extend(y)
print(x)

#remove
x.remove(4)
print(x)

#pop
xi = x.pop(2)
print(xi)
print(x)

#copy
x_copy = x.copy()
print(x_copy)
x[1] = 3
print(x_copy)

#срезы
x = [xi for xi in range(10)]
print(x)
print(x[2:5])
print(x[:5])
print(x[2:])
print(x[::-1])
print(x[2:7:2])
print(x[7:2:-2])

#распаковка
x = [1, 2, 3]

a, b, c = x
print(a, b, c)

x = [1, 2, 3, 4]

*a, b, c = x
print(a, b, c)

a, b, *c = x
print(a, b, c)

print([*x, *y])
x.reverse()
x1 = x.copy()
print(x)
print(x1)
print(len(x))