Use range to add char. to empty string

[johneven]

This seems simple enough, but I can't seem to get my head around it.

The problem:
Create an empty string and assign it to the variable lett. Then using range, write code such that when your code is run, lett has 7 b’s ("bbbbbbb").

My attempt:

lett = ' '
for _ in range (7):
     append.lett(b)
print(lett)

I'm pretty sure you can't append to a string, but I'm at a loss for other options. It doesn't seem like we can split lett then rejoin.