name = "Mickey Mouse"
        012345678901
print name[::-1] + "x" + name[5]

sequences:
ages = [21, 19, 17, 23]
         0   1   2   3
print ages[1]
19
print ages[0:2]
[21, 19]

print ages[0:4:2]
[21, 17]

print ages[::-1]
[23, 17, 19, 21]

[num]
[num:num2]
[num:num2:num3]


name = "Mickey"
        012345
print name[5]
y
print name[1]
i
print name[3:5]
ke

print name[2:]
ckey

print name[:4]
Mick
print name + name[2:3]
Mickeyc
print name.find("c")
2
print name.find("X")
-1

name = "Mickey Mouse"
        012345678901
print name.rfind("M")
7
print name.find("M")
0
print name.find("M", 5)
7