leangaurav

x = [1,2,3]
y = x
print(id(x), id(y))

Output
3121052975624 3121052975624

leangaurav

x = [1,2,3]
y = x
x[0] = 10
print(x, y)

Output
[10, 2, 3] [10, 2, 3]

leangaurav

l1 = [1,2,3]
l2 = list(l1)  # 1. call list constructor
l3 = l1[:]     # 2. copy all elements via slicing
l4 = l1.copy() # 3. call list copy function

l1[0] = 10
print(l1)
print(l2)
print(l3)

leangaurav

l1 = [[10,20,30], 1, 2, 3]# a list with another list at index 0
l2 = list(l1)             # create a copy

l1.append(4)              # append to list l1
l1[0].append(40)          # modify the inner list of l1

print(l1)
print(l2)

leangaurav

l1 = [[10,20,30], 1, 2, 3]# a list with another list at index 0
l2 = list(l1)             # create a copy

l1.append(4)              # append to list l1
l1[0].append(40)          # modify the inner list of l1

print( id(l1[0]) )
print( id(l2[0]) )

leangaurav

import copy               # this is the module to use
l1 = [[10,20,30], 1, 2, 3]
l2 = copy.deepcopy(l1)             # create a copy using the deepcopy function from copy

l1.append(4)              # append to list l1
l1[0].append(40)          # modify the inner list of l1

print( l1 )
print( l2 )

leangaurav

```
l1 = [ 1,2,3 ]
l2 = [ l1, [10,20,30] ]
l3 = [ list(l1), [10,20,30] ]

l1.append(4)
l2[1].append(40)

print(l1)
print(l2)

leangaurav

A = [ 1 ,2 ,3 ,4 ] # list
A = ( 1 ,2 ,3 ,4 ) # tuple

leangaurav

A=[ 1 ,2 ,3 ,4 ]
print(A[0])
print(A[1])
print(A[2])
print(A[3])

Output
1

leangaurav

A = [ 1 ,2 ,3 ,4 ]
for i in range( len(A) ): # uses indexes
  print(A[i])

Output
1
2
3