Page 85 - Dig_CodeAI_V2.1_Class_7
P. 85

In the  previous  class, you  have  learned  what  is Python,  its features,  how  to  install  Python,
                 programming in Python and variable.
                 In this chapter, you will learn about data types, comments, operators and its precedence.

                 Data Types

                 Data  types  are  used  to  define  the  type  of  value  a  variable  can  contain.  Each  variable  in  Python  is
                 associated with some data type. Each data type requires a different amount of memory and has some
                 specific operations performed on it.  Data types are divided into four categories as shown below:



                                                                    Data Types




                                    Numbers                  Sets              Sequence               Boolean




                      Integer/long               Float               String                   List





                                    Complex                                      Tuple
                 Number

                 Integer numbers, floating-point numbers, and complex numbers are the built-in numeric data types
                 of Python.

                 Integer/Long

                 Integers are whole numbers consisting of + or – signs. They do not have decimal places between
                 them. The range of an integer can be from -2147483648 to 2147483647.

                 Float
                 Float data types represent numbers that contain a decimal point. For example, 0.6, -3.257 are called
                 floating-point numbers. These numbers can also be written using ‘e’ or ‘E’ to represent the power 10.

                 Complex

                 A complex is a number that is written in the form a+ bj or a+bJ. It is represented as (real part) +
                 (imaginary part) j.
                 Sets

                 Set is a mutable, unordered collection of values, of any type, with no duplicate element.

                 Sequence

                 A sequence is an ordered collection of items of similar or different data types. The three types of
                 sequence data types are Strings, Lists and Tuples.




                                                                                            More on Python    83
   80   81   82   83   84   85   86   87   88   89   90