CP164 Lecture 2: food_utilities class

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1 Aug 2018
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__updated__ = "2018-01-21" from food import food def get_food(): Creates a food object by requesting data from a user. Postconditions: returns food - a completed food object (food). name = input("name: ") print("origin") print(food. origins()) origin = int(input(": ")) s = input("vegetarian (y/n): ") # accept a range of values for vegetarian is_vegetarian = s. upper() in ("y", "true", "1", "t", "yes") calories = int(input("calories: ")) food = food(name, origin, is_vegetarian, calories) return food def read_food(line): Creates and returns a food object from a line of string data. Preconditions: line - a vertical bar-delimited line of food data in the format name|origin|is_vegetarian|calories (str) Postconditions: returns food - contains the data from line (food) data = line. strip(). split("|") food = food(data[0], int(data[1]), data[2] == "true", int(data[3])) return food def read_foods(file_variable): Reads a file of food strings into a list of food objects. Preconditions: file_variable - a file of food data (file)

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