1 * Data Types

     2 *** Outline

     3 ***** Introduction

     4 ******* What are we going to do?

     5 ******* How are we going to do?

     6 ******* Arsenal Required

     7 ********* None

     8 *** Script

     9     Welcome friends. 

    10     

    11     In this tutorial we shall look at data types available in Python and 

    12     how to perform simple Input and Output operations. 

    13     for 'Numbers' we have: int, float, complex datatypes

    14     for Text content we have strings.

    15     For conditional statements, 'Booleans'.

    16     

    17     Lets get started by opening IPython interpreter. 

    18     Lets start with  'numbers'

    19     All integers irrespective of how big they are, are of 'int'

    20     data type

    21     Now we will create a variable, say

    22     x = 13

    23     print x

    24 

    25     To check the data type of any variable Python provides 'type' function

    26     type(x)

    27     

    28     y = 999999999999

    29     print y

    30     

    31     Floating point numbers comes under 'float'

    32     p = 3.141592

    33     type(p)

    34 

    35     Python by default provides support for complex numbers. 

    36     c = 3+4j 

    37     c is a complex number. 'j' is used to specify the imaginary part.

    38     type(c)

    39     Python also provides basic functions for their manipulations like

    40     abs(c) will return the absolute value of c(sqrt(a^2 + b^2))

    41     c.imag returns imaginary part and c.real gives the real part. 

    42 

    43     Next we will look at Boolean datatype:

    44     Its a primitive datatype having one of two values: True or False.

    45     t = True

    46     print t

    47 

    48     Python is case sensitive language, so True with 'T' is boolean type but

    49     true with 't' would be a variable. 

    50     

    51     f = not True

    52     

    53     we can do binary operation like 'or' and 'not' with these variables

    54     f or t

    55     f and t

    56     

    57     in case of multiple binary operations to make sure of precedence use 

    58     'brackets ()'

    59     a = False

    60     b = True

    61     c = True

    62     (a and b) or c    

    63     True

    64     first a and b is evaluated and then the 'or' statement

    65     a and (b or c)

    66     False

    67 

    68     we come to the end of this tutorial on introduction of Data types in

    69     Python. In this tutorial we have learnt what are supported data types, 

    70     supported operations and performing simple IO operations in Python.

    71 

    72 *** Notes