list of 2d list python code example

Example 1: how to create 2d list in python

o=[]
for i in range(0,rows):
    x=[]
    for j in range(0,cols):
        x.append(0)
    o.append(x)
#if you use [[0]*cols]*rows all rows will become the same list
#so editing in one row will edit all rows

Example 2: We pass in a 2 dimensional list. You should output the 3rd element of the 2nd row.

In a 2 dimensional list, output the 3rd element of the 2nd row.
# remember to account for 0 index
print(variable[1][2])