Program to append a List based on the type to be appended

#program to append a list based on the type to be appended

l1=[1,2,3,4]

print("Original list is:",l1)

n=eval(input("Enter anumber or a list to be appended: "))

if type(n)==type([]):

    l1.extend(n)

elif type(n)==type(1):

    l1.append(n)

else:

    print("Enter an integer or a list")

print("Appended list is",l1)