def printsection1(animals, station1, station2):
    for animal in animals:
        print(animal,'                 ',station1.get(animal, 0),'                   ',station2.get(animal, 0))

def printsection2(animals, station1, station2):
    for animal in animals:
        if station2.get(animal, 0)+station1.get(animal, 0) >= 4:
            print(animal)

def printsection3(animals, station1, station2):
    for animal in animals:
        print(animal,'                    ',int(station1.get(animal, 0))+int(station2.get(animal, 0)))

def printsection4(items):
    import statistics
    most_visits=[]
    for animal, date, station in items:
        most_visits.append(date[0:2])

    print(statistics.mode(most_visits))

outfile.write("Number of times each animal visited each station:n")
outfile.write("Animal ID           Station 1           Station 2 n")
printsection1(animals, station1, station2)
outfile.write('n')
outfile.write("============================================================ n")

outfile.write("Animals that visited both stations at least 4 times n")
printsection2(animals, station1, station2)
outfile.write('n')
outfile.write("============================================================ n")

outfile.write("Total number of visits for each animal n")
printsection3(animals, station1, station2)
outfile.write('n')
outfile.write("============================================================ n")

outfile.write("Month that has the highest number of visits to the stations n")
printsection4(items)