samarpitnasa

.container {
  margin: 100px auto;
  width: 600px;
}
.col-sm-4 {
  margin-bottom: -100px;
}
.login {
  position: relative;
  margin: 0 auto;

samarpitnasa

while True :
    try :
        n = input("Please enter an integer")
        n=int(n)
        break
    except ValueError :
        print ("No valid Integer! Please Enter again")
print ("Great, you successfully entered an integer")

samarpitnasa

a = int(input("Enter a no."))
b = int(input("Enter a no."))
c = str(input("Enter a mathematical function"))
def calculator(c):
    return{
        '+': a+b,
        '-': a-b,
        '*': a*b,
        '/': a/b,
        }.get(c)

samarpitnasa

i=int(input("Enter days in the year"))
if i==366:
    print("The year is a leap year")
elif i==365:
    print ("The year is not a leap year")
else:
    print ("Year not valid")