MAINT: need a class check first in newer python (from new-new-new 73405c10d48bec071b281f43b48d251a5212bfb2)
MAINT: need a class check first in newer python (from new-new-new 73405c10d48bec071b281f43b48d251a5212bfb2)

humdings/zipline,humdings/zipline