2.9.py

month = input("Input the month : ")
day = int(input("Input the day: "))

if month in ('January'or'Jan', 'February' or 'Feb', 'March' or 'Mar'):
	season = 'winter'
elif month in ('April' or 'Apr', 'May', 'June' or 'Jun'):
	season = 'spring'
elif month in ('July' or 'Jul', 'August' or 'Aug', 'September' or 'Sep'):
	season = 'summer'
else:
	season = 'autumn'

if (month == 'March' or 'Mar') and (day > 19):
	season = 'spring'
elif (month == 'June' or 'Jun') and (day > 20):
	season = 'summer'
elif (month == 'September' or 'Sep') and (day > 21):
	season = 'autumn'
elif (month == 'December' or 'Dec') and (day > 20):
	season = 'winter'

print("Season is",season)