""\nHousehold projects often require converting between different units. For example, tiles may be measured square inches while your bathroom may be measured in square footage. Suppose you are given a set of conversion rates between different units as a dictionary of dictionaries:\n\nconversions = {\n    \'mile\': {\'foot\': 5280, \'kilometer\': 1.60934},\n    \'foot\': {\'inch\': 12},\n    \'kilometer\': {\'meter\': 1000},\n    \'meter\': {\'centimeter\': 100},\n}\n\nGiven this data structure, write a function that returns the conversion rate between two arbitrary units. E.g., conversion(\'inch\', \'centimeter\') = 2.54\n"""\nconversions = {\n    \'mile\': {\'foot\': 5280, \'kilometer\': 1.60934},\n    \'foot\': {\'inch\': 12},\n    \'kilometer\': {\'meter\': 1000},\n    \'meter\': {\'centimeter\': 100},\n}\ndef conversion(unit1:str, unit2:str):

""\nHousehold projects often require converting between different units. For example, tiles may be measured square inches while your bathroom may be measured in