Python program to print all sublists of a list.

Given a list, print all the sublists of a list.

Examples −

Input : list = [1, 2, 3] 
Output : [], [1], [1, 2], [1, 2, 3], [2], [2, 3], [3]]

Algorithm

Step 1 : given a list.
Step 2 : take one sublist which is empty initially.
Step 3 : use one for loop till length of the given list.
Step 4 : Run a loop from i+1 to length of the list to get all the sub arrays from i to its right.
Step 5 : Slice the sub array from i to j.
Step 6 : Append it to an another list to store it.
Step 7 : Print it at the end.

Example Code

# Python program to print all  
# sublist from a given list  
# function to generate all the sub lists 
def displaysublist(A): 
   # store all the sublists  
   B = [[ ]] 
      
   # first loop  
   for i in range(len(A) + 1):   
      # second loop  
      for j in range(i + 1, len(A) + 1):         
         # slice the subarray  
         sub = A[i:j] 
         B.append(sub) 
   return B 
  
# driver code 
A=list()
n=int(input("Enter the size of the First List ::"))
print("Enter the Element of First List ::")
for i in range(int(n)):
   k=int(input(""))
   A.append(k)
print("SUBLIST IS ::>",displaysublist(A)) 

Output

Enter the size of the First List :: 3
Enter the Element of First List ::
1
2
3
SUBLIST IS ::> [[], [1], [1, 2], [1, 2, 3], [2], [2, 3], [3]]