def f(): return 2, 1
b, a = f()
print(a, b)

def f(s='', l=[]):
    s += '1'
    l.append(1)
    return s, l
f()
s, l = f()
print(len(s), len(l))

s = ['3b', '1c', '2a']
x = sorted(s, key=lambda x: x[-1])
print(*x)

x = 1
a = lambda y: x + y
x = 2
b = lambda y: x + y
print(a(3), b(3))

x = 1
a = lambda y, x=x: x + y
x = 2
b = lambda y, x=x: x + y
print(a(3), b(3))

g = [lambda x: x+n for n in range(2)]
for f in g:
    print(f(0), end='')

g = [lambda x, n=n: x+n for n in range(2)]
for f in g:
    print(f(0), end='')

from functools import partial
def spam(a, b):
    print(a, b)
s = partial(spam, b=1)
s(2)

def f():
    n = 0
    def g():
        nonlocal n
        n += 1
    def get():
        return n
    f.get = get
    return g
g1, g2 = f(), f()
g1(), g2(), g1()
print(f.get())

x = [*map(lambda x: x**2, [1, 2, 3])]
y = [x**2 for x in range(1, 4)]
print(x == y)