Two dimensional array python

Question

I am having problem with two dimensional array in python. I explained my problem in the code.

https://code.sololearn.com/csVYFqkb7k54/?ref=app

Answer 1

What happened there is that you are getting a shallow copy of temp into plist. Do a deep copy instead so that the list contents remain even after changing temp repeatedly within the loop. Else, plist contents will change according to temp.

import copy

def power_list(list):
plist=[]
l=len(list)
for i in range(l):
temp=[]
for j in range(i,l):
temp.append(list[j])
print(temp)
plist.append(copy.deepcopy(temp))
print(plist)

list=[2,3,4]
power_list(list)

Ref:

https://docs.python.org/3.8/library/copy.html