The question is a good base for a holy war :-)
I want to say that PHP has some advantages Python will never have - it's very simple
in deployment, there is no fuss with library versions, nearly all needed features are
already built-in including a good SAPI (!) so you don't need wsgi, psgi and etc, you
don't need any virtualenvs for deploying because nobody typicaaly uses pear libraries
PHP is faster (if you don't take pypy and etc in account).
Also I personally HATE block formatting using indentation. It's so silly idea no more
language in the world has. Also for example I don't like python's strict
typization ideas (for example it throws exception if you concatenate long and str using
+). PHP is simple and has no such problems.
And for webdev I don't like frameworks, either. I.e I don't like them at all -
because I always feel they are trying to restrict me. So Django is not an argument for me,
and may be not an argument for you too. And definitely you can't say django is just
better than php.
What php misses it's the builtin metaprogramming, but in 99% cases you should better
write code instead of doing metaprogramming.
So for webdev my opinion is that php is MUCH better than python.