Commit af3b653

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Add reverse string task

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	`1`	`+import pytest`
	`2`	`+`
	`3`	`+`
	`4`	`+def reverse_string(input):`
	`5`	`+ if not input:`
	`6`	`+ raise Exception("String cannot be empty")`
	`7`	`+ if not input.isascii():`
	`8`	`+ raise Exception("String cannot be digits or other special characters")`
	`9`	`+ tmp = input.split(" ")`
	`10`	`+ return " ".join(tmp[::-1])`
	`11`	`+`
	`12`	`+`
	`13`	`+def test_reverse_string():`
	`14`	`+ input_string = "How are you?"`
	`15`	`+ expected_value = "you? are How"`
	`16`	`+ assert reverse_string(input_string) == expected_value`
	`17`	`+`
	`18`	`+`
	`19`	`+def test_reverse_string_empty():`
	`20`	`+ input_string = ""`
	`21`	`+ with pytest.raises(Exception):`
	`22`	`+ reverse_string(input_string)`
	`23`	`+`
	`24`	`+`
	`25`	`+def test_reverse_string_with_bool():`
	`26`	`+ input_string = True`
	`27`	`+ with pytest.raises(Exception):`
	`28`	`+ reverse_string(input_string)`

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