Fix python 2.7 missing list class

12 jobs for doc27 in 8 minutes and 39 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #64924
conda-linux
build_linux_27

00:01:50

passed #64926
conda-linux
build_linux_34

00:04:53

passed #64928
conda-linux
build_linux_35

00:03:17

passed #64929
conda-macosx
build_macosx_27

00:03:37

passed #64927
conda-macosx
build_macosx_34

00:04:42

passed #64925
conda-macosx
build_macosx_35

00:03:19

 
  Test
passed #64934
conda-linux
test_linux_27

00:01:38

68.0%
passed #64932
conda-linux
test_linux_34

00:01:49

68.0%
passed #64930
conda-linux
test_linux_35

00:01:19

68.0%
passed #64931
conda-macosx
test_macosx_27

00:02:01

68.0%
passed #64933
conda-macosx
test_macosx_34

00:02:13

68.0%
passed #64935
conda-macosx
test_macosx_35

00:01:40

68.0%