n = -12.5
if n < 0:
print('This is negative number')
elif n == 0:
print('This is zero number')
elif n > 0:
print('This is positive number')
In [11]: L =[]
In [12]: for i in range(1000):
...: if i%3==0 or i%5==0:
...: L.append(i)
...: sum(L)
n = input("Nhap thang:")
if n == 1:
print('January 31')
elif n == 2:
print('February 28')
elif n == 3:
print('March 31')
elif n == 4:
print('April 30')
elif n == 5:
print('May 31')
elif n == 6:
print('June 30')
elif n == 7:
print('July 31')
elif n == 8:
print('August 31')
elif n == 9:
print('September 30')
elif n == 10:
print('October 31')
elif n == 11:
print('November 30')
elif n == 12:
print('December 31')
