Categories: Python ||
Sockets are the endpoints of a bidirectional communications channel. Sockets may communicate within a process, between processes on the same machine, or between processes on different continents.Socke
Categories: PHP ||
Python provides two levels of access to 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
Categories: Python ||
Except for control characters, (+ ? . * ^ $ ( ) [ ] { } | \), all characters match themselves. You can escape a control character by preceding it with a backslash.Following table lists the regular exp
Categories: Python ||
Regular expression literals may include an optional modifier to control various aspects of matching. The modifiers are specified as an optional flag. You can provide multiple modifiers using exclusive
Categories: Python ||
This function attempts to match RE pattern to string with optional flags.Here is the syntax for this function −re.match(pattern, string, flags=0)Here is the description of the parameters −
Categories: Python ||
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 use
Categories: AWS(Amazon Web Services) ||
AWS AppSync introduces new simplified console experience to deploy generic real-time Pub/Sub APIs AWS AppSync is a fully managed service that enables developers to build digital experiences b
Categories: AWS(Amazon Web Services) ||
Amazon Managed Grafana introduces new API for creating Grafana API tokens and support for version 8.4 Amazon Managed Grafana now supports a new API for creating Grafana API tokens, as well as
Categories: AWS(Amazon Web Services) ||
Two new storage locations available for AWS DataSync Today, we are announcing the general availability of two additional storage locations for AWS DataSync, an online data movement service th
Categories: Python ||
Once a database connection is established, we are ready to create tables or records into the database tables using execute method of the created cursor.ExampleLet us create Database table EMPLOYEE −
Categories: Python ||
Before connecting to a MySQL database, make sure of the followings −You have created a database TESTDB.You have created a table EMPLOYEE in TESTDB.This table has fields FIRST_NAME, LAST_NAME, AGE, S
Categories: Python ||
MySQLdb is an interface for connecting to a MySQL database server from Python. It implements the Python Database API v2.0 and is built on top of the MySQL C API.How do I Install MySQLdb?Before proceed
Categories: Python ||
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 su
Categories: Python ||
Sometimes, it is desired that you want to give option where a user can click a link and it will pop up a "File Download" dialogue box to the user instead of displaying actual content. This is very eas
Categories: Python ||
It is very easy to send cookies to browser. These cookies are sent along with HTTP Header before to Content-type field. Assuming you want to set UserID and Password as cookies. Setting the cookies is
Categories: Python ||
Your server sends some data to the visitor's browser in the form of a cookie. The browser may accept the cookie. If it does, it is stored as a plain text record on the visitor's hard drive. Now, when
Categories: Python ||
HTTP protocol is a stateless protocol. For a commercial website, it is required to maintain session information among different pages. For example, one user registration ends after completing many pag
Categories: Python ||
TEXTAREA element is used when multiline text has to be passed to the CGI Program.Here is example HTML code for a form with a TEXTAREA box −<form action = "/cgi-bin/textarea.py" method = "post" ta
Categories: Python ||
Radio Buttons are used when only one option is required to be selected.Here is example HTML code for a form with two radio buttons −<form action = "/cgi-bin/radiobutton.py" method = "post" target
Categories: Python ||
A generally more reliable method of passing information to a CGI program is the POST method. This packages the information in exactly the same way as GET methods, but instead of sending it as a text s
Categories: Python ||
This example passes two values using HTML FORM and submit button. We use same CGI script hello_get.py to handle this input.<form action = "/cgi-bin/hello_get.py" method = "get">First Name: <i
Categories: Python ||
The GET method sends the encoded user information appended to the page request. The page and the encoded information are separated by the ? character as follows −http://www.test.com/cgi-bin/hello.py
Categories: Python ||
All the CGI programs have access to the following environment variables. These variables play an important role while writing any CGI program.Sr.No. - Variable Name & Description1. CONTENT_TYPE -
Categories: Python ||
The line Content-type:text/html\r\n\r\n is part of HTTP header which is sent to the browser to understand the content. All the HTTP header will be in the following form −HTTP Field Name: Field Conte
Categories: Python ||
Before you proceed with CGI Programming, make sure that your Web Server supports CGI and it is configured to handle CGI Programs. All the CGI Programs to be executed by the HTTP server are kept in a p
Categories: Python ||
To understand the concept of CGI, let us see what happens when we click a hyper link to browse a particular web page or URL.Your browser contacts the HTTP web server and demands for the URL, i.e., fil
Categories: Python ||
The Common Gateway Interface, or CGI, is a set of standards that define how information is exchanged between the web server and a custom script. The CGI specs are currently maintained by the NCSA.
Categories: AWS(Amazon Web Services) ||
Announcing preview of Amazon Linux Today, we are announcing the public preview of Amazon Linux 2022 (AL2022), Amazon's new general purpose Linux for AWS that is designed to provid
Categories: AWS(Amazon Web Services) ||
Introducing two new Amazon EC2 bare metal instances Starting today, Amazon EC2 M6i and C6i bare metal instances are available. M6i and C6i instances are powered by 3rd generation Intel Xeon S
Categories: AWS(Amazon Web Services) ||
Announcing AWS Graviton2-based instances for Amazon Neptune Starting today, Amazon Neptune announced the general availability of general-purpose T4g and memory-optimized R6g database instance
Categories: AWS(Amazon Web Services) ||
Amazon EC2 Mac Instances now support macOS Monterey Starting today, customers can run macOS Monterey (12.0.1) as Amazon Machine Images (AMIs) on Amazon EC2 Mac instances. Apple macOS Monterey
Categories: AWS(Amazon Web Services) ||
Announcing AWS Graviton2-based instances for Amazon Neptune Starting today, Amazon Neptune announced the general availability of general-purpose T4g and memory-optimized R6g database instance
Categories: AWS(Amazon Web Services) ||
Amazon OpenSearch Service (successor to Amazon Elasticsearch Service) now supports checking for blue/green deployment when making configuration changes. You can now check whether a configurat
Categories: AWS(Amazon Web Services) ||
Amazon ECS announces a new integration with AWS Distro for OpenTelemetry Amazon Elastic Container Service (Amazon ECS) now enables customers to quickly get started to monitor and debug their
Categories: AWS(Amazon Web Services) ||
Amazon SQS Announces Server-Side Encryption with Amazon SQS-managed encryption keys (SSE-SQS) Amazon Simple Queue Service (SQS) now provides managed server-side encryption using SQS owned enc
Categories: AWS(Amazon Web Services) ||
Announcing Amazon Redshift cross-region data sharing (preview) Amazon Redshift data sharing allows you to share live, transactionally consistent data across different Redshift clusters withou
Categories: AWS(Amazon Web Services) ||
Now prepare data and build models using TensorFlow 2.6 and PyTorch 1.8 in Amazon SageMaker Studio Notebooks Amazon SageMaker Studio is the first fully integrated development environment (IDE)
Categories: AWS(Amazon Web Services) ||
AWS Single Sign-On now provides one-click login to Amazon EC2 instances running Microsoft Windows You can now enable one-click single sign-on to your Amazon Elastic Compute Cloud instances ru
Categories: Python ||
Instead of starting from scratch, you can create a class by deriving it from a preexisting class by listing the parent class in parentheses after the new class name.The child class inherits the attrib
Categories: Python ||
Every Python class keeps following built-in attributes and they can be accessed using dot operator like any other attribute −__dict__ − Dictionary containing the class's namespace.__doc__ − Clas
Categories: Python ||
You access the object's attributes using the dot operator with object. Class variable would be accessed using class name as follows −emp1.displayEmployee()emp2.displayEmployee()print "Total Employee
Categories: Python ||
To create instances of a class, you call the class using class name and pass in whatever arguments its __init__ method accepts."This would create first object of Employee class"emp1 = Employee("Zara",
Categories: Python ||
Python has been an object-oriented language since it existed. Because of this, creating and using classes and objects are downright easy. This chapter helps you become an expert in using Python's obje
Categories: Python ||
An object's attributes may or may not be visible outside the class definition. You need to name attributes with a double underscore prefix, and those attributes then are not be directly visible to out
Categories: Python ||
Suppose you have created a Vector class to represent two-dimensional vectors, what happens when you use the plus operator to add them? Most likely Python will yell at you.You could, however, define th
Categories: Python ||
Following table lists some generic functionality that you can override in your own classes −Sr.No.Method, Description & Sample Call1. __init__ ( self [,args...] ) - Constructor (with any optiona
Categories: Python ||
Instead of starting from scratch, you can create a class by deriving it from a preexisting class by listing the parent class in parentheses after the new class name.The child class inherits the attrib
Categories: Python ||
Python deletes unneeded objects (built-in types or class instances) automatically to free the memory space. The process by which Python periodically reclaims blocks of memory that no longer are in use
Categories: Python ||
Every Python class keeps following built-in attributes and they can be accessed using dot operator like any other attribute −__dict__ − Dictionary containing the class's namespace.__doc__ − Clas
Categories: Python ||
You access the object's attributes using the dot operator with object. Class variable would be accessed using class name as follows −emp1.displayEmployee()emp2.displayEmployee()print "Total Employee