from random import randint

s1 = "Lorem ipsum dolor sit amet, consectetur adipiscing elit"

def comp(x):
    return randint(0,1) if x.isalpha() else x

def sc(w):
    out = []
    calc = list(map(comp,list(w)))
    zipped = list(zip(calc,list(w)))
    counter = 0
    while counter < len(w):
        for i in zipped:
            if i[0] == 0:
                out.append(i[1].lower())
                counter += 1
            elif i[0] == 1:
                out.append(i[1].upper())
                counter += 1
            else:
                out.append(i[0])
                counter += 1
    return ''.join(out)


# printer = lambda num: "{}".format(num) * num + "\n"

# def pt(n):
#     if n < 1:
#         return ""
#     nums = list(range(1,n+1))
#     return list(map(printer,nums[::-1]))