Python Lists

• Accessing Values in Lists:

  #!/usr/bin/python
  
  list1 = ['physics', 'chemistry', 1997, 2000];
  list2 = [1, 2, 3, 4, 5, 6, 7 ];
  
  print "list1[0]: ", list1[0]
  print "list2[1:5]: ", list2[1:5]

• Output

  list1[0]: physics
  list2[1:5]: [2, 3, 4, 5]

• Updating Lists:

  #!/usr/bin/python
  
  list = ['physics', 'chemistry', 1997, 2000];
  
  print "Value available at index 2 : "
  print list[2];
  list[2] = 2001;
  print "New value available at index 2 : "
  print list[2];

• Output

  Value available at index 2 :
  1997
  New value available at index 2 :
  2001

• Delete List Elements:

  #!/usr/bin/python
  
  list1 = ['physics', 'chemistry', 1997, 2000];
  
  print list1;
  del list1[2];
  print "After deleting value at index 2 : "
  print list1;

• Output

  ['physics', 'chemistry', 1997, 2000]
  After deleting value at index 2 :
  ['physics', 'chemistry', 2000]