Exercise 1.15

[Jason]

Confused about Exercise 1.15.

I used x.startswith(b) and finally got the list comprehension to work, but why didn't it work before when I first used:

sorted(x for x in set(text5) if x[0] == 'b')

 I received the error "IndexError: string index out of range"

I played around and x[0] returns a value, so does x[0][0].

Am I missing something?

[Fred Mailhot]

There's an item in text5 with zero length.

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