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UNIT 6
                        8                                            INTRODUCTION TO








                                                              PYTHON PROGRAMMING










                                Learning Outcomes



                   •  Computer Languages                                   •  Language Translator
                   •  Working of Language Translators                      •   Python
                   •  Features of Python                                   •  Installing Python
                   •  Programming in Python                                •  Input and Output
                   •  Variables in Python                                  •  Data Types
                   •  Comments in Python                                   •  Operators
                   •  Precedence of Operators                              •  Sample Programs


                          Computer Languages


                 To communicate  with  the  computers, we  need  some special  languages  which  are called
                 computer languages or programming languages. A computer language is the medium by
                 which instructions are transmitted to the computer to perform a specific task. It is a set of
                 words, symbols and codes that the computer can understand. It is used to write computer
                 programs. A computer program is a set of instructions written in a programming language.

                 The process of writing a program is called programming. People who write the programs
                 are called programmers. There are a number of programming languages worldwide. Some
                 languages were developed for specific computers, others were developed for specific uses

                 such as scientific or business applications. Computer languages are classified into two major
                 categories:

                                                  Computer Languages





                          Low-Level Language                                    High-Level Language




                       Machine           Assembly       Third Generation  Fourth-Generation             Natural
                   Language (1GL) Language (2GL)         Language (3GL)        Language (4GL)       Language (5GL)



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