Commitdd3fec7

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implement math.comb ourselves

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Original file line number	Diff line number	Diff line change
`@@ -9,7 +9,12 @@`
`9`	`9`
`10`	`10`	`importmatplotlib.cbookascbook`
`11`	`11`
`12`		`-_comb=np.vectorize(math.comb)`
	`12`	`+# same algorithm as 3.8's math.comb`
	`13`	`+def_comb(n,k):`
	`14`	`+k=min(k,n-k)`
	`15`	`+i=np.arange(1,k+1)`
	`16`	`+returnnp.prod((n+1-i)/i).astype(int)`
	`17`	`+_comb=np.vectorize(_comb)`
`13`	`18`
`14`	`19`	`classNonIntersectingPathException(ValueError):`
`15`	`20`	`pass`

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