Consider the following python module: a = 0 def b(): global a a = c(a) def c(a): return a + 2 after importing the module into the interpreter, you execute: > > > b() > > > b() > > > b() > > > a ? what value is displayed when the last expression (a) is evaluated? explain your answer by indicating what happens in every executed statement.

Write a program that prints the day number of the year, given the date in the form month-day-year. for example, if the input is 1-1-2006, the day number is 1; if the input is 12-25-2006, the day number is 359. the program should check for a leap year. a year is a leap year if it is divisible by 4, but not divisible by 100. for example, 1992 and 2008 are divisible by 4, but not by 100. a year that is divisible by 100 is a leap year if it is also divisible by 400. for example, 1600 and 2000 are divisible by 400. however, 1800 is not a leap year because 1800 is not divisible by 400.