error in using pydot to ddraw a simple graph.

[aniket joshi]

hi all,
i know for some of you this might be redundant but i am writing a code
which prints out a graph of websites.
i decided to go for graphviz 2.26.2.
but when i try to execute the code i am getting this error:

Couldn't import dot_parser, loading of dot files will not be possible.

i am not able to understand whether i have wrongly copied all the
modules in other place.But,i double checked it still i am unable to
resolve this.
Please reply asap.
sorry for redundancy if any.

thanks and Regards,
Aniket Joshi