IndentationError: expected an indented block

[John Machin]

casioculture at gmail.com wrote:
> Haha. How can I fix this!

Haha to you too. Position your cursor at the scene of the crime. Hit
the space-bar 4 times. Hit Ctrl-s. Try running it again.

If you would prefer a more sensible answer, you might like to ask a
more sensible question, which would include a copy/paste of the error
message plus a few lines of context.

Cheers,
John