Hello,

Perhaps I'm doing something wrong, but I can't get pymongo to respect the read preference.
Here I show how it ignores the read preference = Secondary.
However, in all the settings I tried it always connects to the Primary.
Same thing happens with SecondaryPreferred and with Nearest, the ping difference, through MongoDB is quite significant.
I have also asked the same question on mongo-user, just in case I'm being naive and missed out something trivial.

Here it is in 3.2.2:
https://gist.github.com/edgarcosta/9360ae676cfc929752c377ed4927e204

Here it is in 2.8:
https://gist.github.com/edgarcosta/96d33b7ee79b4b64ab1123d50c05da6b

and here are the rs.conf():
https://gist.github.com/edgarcosta/3799a85296e6ca288ecfa832c498dbba
and
rs.status():
https://gist.github.com/edgarcosta/69a4f967dfb11971ecce7e23ce64229c

Primary is running MongoDB 3.2.1 and the secondaries are running MongoDB 3.2.6.

Best,
Edgar