In String literals we can use esacpe characters to associate a special meaning. 1) >>> s="durga\nsoftware" 2) >>> print(s) 3) durga 4) software 5) >>> s="durga\tsoftware" 6) >>> print(s) 7) durga software 8) >>> s="This is " symbol" 9) File "", line 1 10) s="This is " symbol" 11) ^ 12) SyntaxError: invalid syntax 13) >>> s="This is \" symbol" 14) >>> print(s) 15) This is " symbol The following are various important escape characters in Python

1) \n 2) \t 3) \r 4) \b 5) \f 6) \v 7) \' 8) \" 9) \\ ....

Constants:

 Constants concept is not applicable in Python.  But it is convention to use only uppercase characters if we don’t want to change value.

 MAX_VALUE = 10

 It is just convention but we can change the value.  New Line  Horizontal Tab  Carriage Return  Back Space  Form Feed  Vertical Tab  Single Quote  Double Quote  Back Slash Symbol