Are you really using Python 1.5.2? Wow. That's really old :-)
Please copy and paste the *full* traceback that Python shows.
A few more comments below:
On Thu, 19 Jun 2014 14:55:36 +0200, Pat Fourie wrote:
> This is the python code
> Import SER
No it isn't. "Import SER" is a syntax error. Python is case-sensitive,
you mean "import SER" in lowercase. But the problem is, if you re-type
the code in your message, instead of copying and pasting it, who knows
what other new errors you introduce? We could waste hours trying to debug
code containing errors that don't exist in the original.
Always COPY AND PASTE the EXACT code, do not re-type it from memory.
> When I run the above code I get the following error :
> AttributeError : set_speed
Do you have two files called SER, perhaps in different directories? One
contains set_speed function, the other does not?
You should rename one of the files. Also watch out for left-over SER.pyc
files, you should delete them.