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Clash Royale CLAN TAG #URR8PPP googletag.cmd.push(function() googletag.display('div-gpt-ad-1422003450156-2'); ); Python While Loops ❮ Previous Next ❯ Python Loops Python has two primitive loop commands: while loops for loops The while Loop With the while loop we can execute a set of statements as long as a condition is true. Example Print i as long as i is less than 6: i = 1 while i   print(i)   i += 1 Run example » Note: remember to increment i, or else the loop will continue forever. The while loop requires relevant variables to be ready, in this example we need to define an indexing variable, i , which we set to 1. The break Statement With the break statement we can stop the loop even if the while condition is true: Example Exit the loop when i is 3: i = 1 while i   print(i)   if i == 3:     break   i += 1 Run example » googletag.cmd.push(function() googletag.display('div-gpt-ad-149...

Clash Royale CLAN TAG #URR8PPP googletag.cmd.push(function() googletag.display('div-gpt-ad-1422003450156-2'); ); Python Conditions ❮ Previous Next ❯ Python Conditions and If statements Python supports the usual logical conditions from mathematics: Equals: a == b Not Equals: a != b Less than: a < b Less than or equal to: a <= b Greater than: a > b Greater than or equal to: a >= b These conditions can be used in several ways, most commonly in "if statements" and loops. An "if statement" is written by using the if keyword. Example If statement: a = 33 b = 200 if b > a: print("b is greater than a") Run example » In this example we use two variables, a and b , which are used as part of the if statement to test whether b is greater than a . As a is 33 , and b is 200 , we know that 200 is greater than 33, and so we print to screen that "b is greater than a". Indentation Python relies on indentation, using whitespace, ...

Clash Royale CLAN TAG #URR8PPP This article is about the internet bot. For the search engine, see WebCrawler. Architecture of a Web crawler A Web crawler , sometimes called a spider , is an Internet bot that systematically browses the World Wide Web, typically for the purpose of Web indexing ( web spidering ). Web search engines and some other sites use Web crawling or spidering software to update their web content or indices of others sites' web content. Web crawlers copy pages for processing by a search engine which indexes the downloaded pages so users can search more efficiently. Crawlers consume resources on visited systems and often visit sites without approval. Issues of schedule, load, and "politeness" come into play when large collections of pages are accessed. Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request bots to index only parts of a website, or nothing...