Keyword Analysis & Research: what is the purpose of def keyword in python

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is the purpose of def keyword in python	0.85	0.6	3635	94	44
what	1.61	0.2	426	49	4
is	1.71	0.2	3266	44	2
the	0.4	0.3	2975	59	3
purpose	0.11	0.3	2119	62	7
of	0.53	0.7	2593	39	2
def	1.26	0.2	9163	54	3
keyword	0.8	0.2	3417	7	7
in	1.55	0.3	1236	89	2
python	1.69	0.2	5983	53	6

Keyword	CPC	PCC	Volume	Score
what is the purpose of def keyword in python	1.46	0.8	3893	46