feat(python): code injection (CWE-94) #1298

Job	Run time
build (javascript/express)	2m 9s
build (javascript/hapi)	15s
build (javascript/lang)	3m 19s
build (javascript/node)	14s
build (javascript/react)	30s
build (javascript/third_parties)	1m 59s
build (ruby/lang)	4m 12s
build (ruby/rails)	1m 42s
build (ruby/third_parties)	3m 31s
build (java/lang)	2m 59s
build (java/spring)	15s
build (java/android)	13s
build (java/third_parties)	30s
build (php/lang)	5m 1s
build (php/symfony)	54s
build (php/third_parties)	1m 8s
build (python/lang)	36s
build (go/lang)	59s
build (go/gosec)	2m 8s
build (go/gorilla)	14s
build (go/third_parties)	37s
	33m 25s

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