Print all subarrays whose sum equals k in python

all_subarrays_with_sum_k.py

nums = [3,4,-7,3,1,3,1,-4,-2,-2]   # Change the array here
k = 0                              # Change the sum value here

hashmap = {0:[-1]}
cumsum = 0

def printsubarray(indexarray, index):
  for x in indexarray:
    print(nums[x+1:index+1])

for x in range(0,len(nums)):
  cumsum += nums[x]
  if cumsum-k in hashmap:
    printsubarray(hashmap[cumsum-k], x)
  if cumsum in hashmap:
    hashmap.get(cumsum).append(x)
  else:
    hashmap[cumsum] = [x]

# Time complexity : O(n)
# Space complexity : O(n)