Yes you can play with and practice your code. Look for the [x] on the right side of the footer. That will restore the editor.

Bonus code to play with:

```
def pow(a, x):
return a ** x
print pow(11, 2) # 121
print [pow(3, x) for x in range(11)]
# [1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049]
```

It should be noted that Python has a built in function, `pow()`

that the one above just overwrote. It functions the exact same way.

```
def exp(x, a):
return x ** a
print exp(2, 11) # 2048
print [exp(x, 3) for x in range(11)]
# [0, 1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
```

I've actually got these two backwards. The bottom one is the power function (constant exponent) and the top one is the exponential function (constant base).