Commit c0ad5bb

DylanskyepMaximSmolskiy

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Add doctests for cross function. Contributes to #9943 (#12991)

* Add doctests for cross function. Contributes to #9943 * Update sudoku_solver.py --------- Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>

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`@@ -11,6 +11,19 @@`
`11`	`11`	`def cross(items_a, items_b):`
`12`	`12`	`"""`
`13`	`13`	`Cross product of elements in A and elements in B.`
	`14`	`+`
	`15`	`+ >>> cross('AB', '12')`
	`16`	`+ ['A1', 'A2', 'B1', 'B2']`
	`17`	`+ >>> cross('ABC', '123')`
	`18`	`+ ['A1', 'A2', 'A3', 'B1', 'B2', 'B3', 'C1', 'C2', 'C3']`
	`19`	`+ >>> cross('ABC', '1234')`
	`20`	`+ ['A1', 'A2', 'A3', 'A4', 'B1', 'B2', 'B3', 'B4', 'C1', 'C2', 'C3', 'C4']`
	`21`	`+ >>> cross('', '12')`
	`22`	`+ []`
	`23`	`+ >>> cross('A', '')`
	`24`	`+ []`
	`25`	`+ >>> cross('', '')`
	`26`	`+ []`
`14`	`27`	`"""`
`15`	`28`	`return [a + b for a in items_a for b in items_b]`
`16`	`29`

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