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Regular expressions are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are supported in many programming languages. Library implementations are often called an "engine", [4] [5] and many of these are ...
It consists of an object-relational mapper (ORM) that mediates between data models (defined as Python classes) and a relational database ("Model"), a system for processing HTTP requests with a web templating system ("View"), and a regular-expression-based URL dispatcher ("Controller"). Also included in the core framework are:
In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a user name and password when making a request. In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials> , where <credentials> is the Base64 encoding of ID ...
Systems that use passwords for authentication must have some way to check any password entered to gain access. If the valid passwords are simply stored in a system file or database, an attacker who gains sufficient access to the system will obtain all user passwords, giving the attacker access to all accounts on the attacked system and possibly other systems where users employ the same or ...
Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of Python 2. [37] Python consistently ranks as one of the most popular programming languages, and has gained widespread use in the machine learning community. [38] [39] [40] [41]
It is an alternative to the plain text password files provided by mod_auth. mod_auth_kerb: Both 1.x and 2.x series of Apache are supported: Masarykova universita: MIT License: Using the Basic Auth mechanism, it retrieves a username/password pair from the browser and checks them against a Kerberos server mod_auth_ldap: Versions 2.0.41-2.1
regex—Regular Expression; regexp—Regular Expression; RF—Radio Frequency; RFC—Request For Comments; RFI—Radio Frequency Interference; RFID—Radio Frequency Identification; RGB—Red, Green, Blue; RGBA—Red, Green, Blue, Alpha; RHL—Red Hat Linux; RHEL—Red Hat Enterprise Linux; REXX—Restructured Extended Executor Language; RIA ...
Sending a no-cache value thus instructs a browser or proxy to not use the cache contents merely based on "freshness criteria" of the cache content. Another common way to prevent old content from being shown to the user without validation is Cache-Control: max-age=0. This instructs the user agent that the content is stale and should be validated ...