Python Program to Sort a List According to the Length of the Elements

a=[]
n=int(input("Enter number of elements:"))
for i in range(1,n+1):
    b=input("Enter element:")
    a.append(b)
a.sort(key=len)
print(a)

Output

Enter number of elements:4
Enter element:"Apple"
Enter element:"Ball"
Enter element:"Cat"
Enter element:"Dog"
['Cat', 'Dog', 'Ball', 'Apple']