A.str.endswith(substring)B.endswith(str,substring)C.str.hasSuffix(substring)
A.str.startswith(substring)B.str.beginswith(substring)C.str.hasPrefix(substring)D.startswith(str,substring)
A.if condition:pass else:passB.test condition then pass else passC.if condition:pass elseif:passD.condition ?pass :pass