sure:

def find_element$arr,x$:
indices = for i in range$len(arr)$:
if arr$$i$$ == x:
indices.append$i$
return indices
arr = $$1,2,3,4,5,3,6,7,3$$ x = 3
result = find_element$arr,x$
if len$result$ > 0:
print$f"Theelementxisfoundatindex(s):result"$ else:
print$f"Theelementxisnotfoundinthearray."$

Пример:

Input:
arr = $$1,2,3,4,5,3,6,7,3$$ x = 3
Output:
The element 3 is found at index$s$: $$2,5,8$$