PostgreSQL & Python vs PHP

[gene tani]

ok, to make this less open-ended, you should mention what O/S and web
server you have in mind, whether the web and DB servers will be under
your admin (big diff betw python and PHP, as far as finding shared
server accounts at web hosts), what kinds of queries, concurrent
read/write volumes, transactions, dirtiness, etc. etc  Also if you
build your questions to this newsgroup on past threads you've read, you
will get absolute superb information, I guarantee it.