Write the one Sale method of the GroceryStore class. Method oneSale has one parameter: the name of one product (that a customer would like to buy). Method oneSale should attempt to carry out the sale of the named product, and it should return true or false depending on whether the sale is successful. The sale is successful if there is a product in the stock array with the given name and if the number of items in stock of that product is greater than zero. In that case, one Sale should subtract one from the number of items in stock and return true. If there is no product in the stock array with the given name or if the number of items in stock for that product is less than or equal to zero, oneSale should return false.

Working on this program in python 3.7: a year in the modern gregorian calendar consists of 365 days. in reality, the earth takes longer to rotate around the sun. to account for the difference in time, every 4 years, a leap year takes place. a leap year is when a year has 366 days: an extra day, february 29th. the requirements for a given year to be a leap year are: 1) the year must be divisible by 42) if the year is a century year (1700, 1800, the year must be evenly divisible by 400some example leap years are 1600, 1712, and 2016.write a program that takes in a year and determines whether that year is a leap year.ex: if the input is 1712, the output is: 1712 is a leap year. ex: if the input is 1913, the output is: 1913 is not a leap year. your program must define and call the function isleapyear(useryear). the function should return true if the input year is a leap year and false otherwise.