CLN: Python 3.4 deprecation of assert_
#7131: replace some instances of assert_(not b) with assertFalse(b) and some instances of assert_(b) with assertTrue(b). Work-in-progress

hah wondering if u would see that issue!

gr!

FYI you can set the env variable PANDAS_TESTING_MODE  to deprecate to have it show all of these kind of earnings (it's turned off in the 3.4 build because it makes the output really long)

ping in green
 It's like a Batsignal went on.

Good to know about the environment variable; thanks for pointing it out.
 thanks!

I have to add the env variable usage to the wiki
