Keyword Analysis & Research: python append only if not in list

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
python append only if not in list	0.7	0.8	9812	8	33
python	0.55	0.7	9290	24	6
append	0.65	0.4	8614	32	6
only	0.45	0.5	8936	52	4
if	1.73	0.4	3173	52	2
not	0.53	0.6	4925	45	3
in	0.29	0.7	3593	15	2
list	0.53	0.5	4458	95	4

Keyword	CPC	PCC	Volume	Score
python append only if not in list	1.2	1	3708	79
python append none to list	1.83	0.6	4268	93
list not appending python	0.48	0.5	2878	73
python list append if not exists	1.11	0.6	472	33
python list append not working	0.95	0.3	2292	86
python append without modifying list	0.98	0.1	3512	97
python list within list append	0.02	0.2	1147	73
append list with another list python	0.86	0.8	8180	75
append to existing list python	1.04	0.3	1373	57
python list append returns none	0.03	0.1	1705	67
python list append if not none	0.83	0.5	3966	33
can you append none to a list in python	0.17	0.5	7442	10