Program to print all subset of a list in python

program2.py

lst=[1,2,3,4]
lst1=[]
lst1.append([])
for i in range(len(lst)):
    tmp_lst=[]
    for j in range(i+1,len(lst)+1):
        tmp_lst=lst[i:j]
        lst1.append(tmp_lst)
print(lst1)

#here is the output
[[], [1], [1, 2], [1, 2, 3], [1, 2, 3, 4], [2], [2, 3], [2, 3, 4], [3], [3, 4], [4]]