Solved the Problems in Sandbox

Find Leap Year

x = 2024 

if ( x % 4 == 0 ) : 
    if ( x%100 == 0 ) :
        if ( x%400 == 0 ) :
            print("leap year")
        else: 
            print("not leap year")
    else : 
        print("leap year")

else:
    print("not leap year")

Valid or Invalid Email

email = "[email protected]"

if ( len(email) > 10 ) : 
    
    if ( email[-10:] == "@gmail.com"):
        print("email is valid")

    else : 
        print("Invalid email")

else : 
    print("Invalid email")