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Feb
27
2020

Python 3 - Network Programming

Python provides two levels of access to the network services. At a low level, you can access the basic socket support in the underlying operating system, which allows you to implement clients and servers for both connection-oriented and connectionless protocols. Python also has libraries that provide higher-level access to specific application-level network protocols, such as FTP, HTTP, and so on. This chapter gives you an understanding of the most famous concept in Networking - Socket Program.

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Feb
27
2020

Python 3 - MySQL Database Access

The Python standard for database interfaces is the Python DB-API. Most Python database interfaces adhere to this standard. You can choose the right database for your application. Python Database API supports a wide range of database servers such as − GadFly mSQL MySQL PostgreSQL Microsoft SQL Server 2000 Informix Interbase Oracle Sybase SQLite Here is the list of available Python database interfaces − Python Database Interfaces and APIs. You must download a separate D.

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Feb
27
2020

Python 3 - Regular Expressions

A regular expression is a special sequence of characters that helps you match or find other strings or sets of strings, using a specialized syntax held in a pattern. Regular expressions are widely used in UNIX world. The module re provides full support for Perl-like regular expressions in Python. The re module raises the exception re.error if an error occurs while compiling or using a regular expression. We would cover two important functions, which would be used to handle regular expressions..

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Feb
27
2020

Python 3 - Object Oriented

Python has been an object-oriented language since the time it existed. Due to this, creating and using classes and objects are downright easy. This chapter helps you become an expert in using Python's object-oriented programming support. If you do not have any previous experience with object-oriented (OO) programming, you may want to consult an introductory course on it or at least a tutorial of some sort so that you have a grasp of the basic concepts.  However, here is a small introducti.

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Feb
27
2020

Python 3 - Exceptions Handling

Python provides two very important features to handle any unexpected error in your Python programs and to add debugging capabilities in them − Exception Handling − This would be covered in this tutorial. Here is a list standard Exceptions available in Python − Standard Exceptions. Assertions − This would be covered in Assertions in Python 3 tutorial. Standard Exceptions Here is a list of Standard Exceptions available in Python. − Sr.No. Excep.

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Feb
27
2020

Python 3 - Files I/O

This chapter covers all the basic I/O functions available in Python 3. For more functions, please refer to the standard Python documentation. Printing to the Screen The simplest way to produce output is using the print statement where you can pass zero or more expressions separated by commas. This function converts the expressions you pass into a string and writes the result to standard output as follows − #!/usr/bin/python3 print ("Python is really a great language,", "isn't it?") .

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Feb
27
2020

Python 3 - Modules

A module allows you to logically organize your Python code. Grouping related code into a module makes the code easier to understand and use. A module is a Python object with arbitrarily named attributes that you can bind and reference. Simply, a module is a file consisting of Python code. A module can define functions, classes and variables. A module can also include runnable code. Example The Python code for a module named name normally resides in a file namedaname.py. Here is an example of .

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Feb
27
2020

Python 3 - Functions

A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing. As you already know, Python gives you many built-in functions like print(), etc. but you can also create your own functions. These functions are called user-defined functions. Defining a Function You can define functions to provide the required functionality. Here are simple rules to define a function in.

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Feb
27
2020

Python 3 - Date & Time

A Python program can handle date and time in several ways. Converting between date formats is a common chore for computers. Python's time and calendar modules help track dates and times. What is Tick? Time intervals are floating-point numbers in units of seconds. Particular instants in time are expressed in seconds since 12:00am, January 1, 1970(epoch). There is a popular time module available in Python which provides functions for working with times, and for converting between representation.

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Feb
27
2020

Python 3 - Dictionary

Each key is separated from its value by a colon (:), the items are separated by commas, and the whole thing is enclosed in curly braces. An empty dictionary without any items is written with just two curly braces, like this: {}.   Keys are unique within a dictionary while values may not be. The values of a dictionary can be of any type, but the keys must be of an immutable data type such as strings, numbers, or tuples.   Accessing Values in Dictionary   To access dictionary .

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