a = [1, 2, 3]
b = a
a = [4, 5, 6]
b[0] = 9

print(b)

console.log(1 + "2" + "2");
console.log(1 + +"2" + "2");
console.log(1 + -"1" + "2");
console.log(+"1" + "1" + "2");
console.log("A" - "B" + "2");
console.log("A" - "B" + 2);

def add_to(num, target=[]):
    target.append(num)
    return target

result1 = add_to(1)
result2 = add_to(2, [])
result3 = add_to(3)
result4 = add_to(4, result1)

print(result4)

L = [3, 1, 2, 4] 
T = (\'A\', \'b\', \'c\', \'d\') 
L.sort() 
counter = 0
for x in T: 
 L[counter] += int(x) 
 counter += 1
 break
print(L) 

def mystery(x):
    return lambda y: x + y

f1 = mystery(5)
f2 = mystery(10)

result = f1(f2(3))
print(result)

(function() {
  var a = b = 5;
})();

console.log(typeof a);
console.log(typeof b);

def func(val, lst=[]):
    lst.append(val)
    return lst

print(func(1))
print(func(2))
print(func(3))

(function() {
  var a = b = 5;
})();

console.log(b);