Download Programming Python (4th Edition) by Mark Lutz PDF

By Mark Lutz

If you've mastered Python's basics, you're able to begin utilizing it to get actual paintings performed. Programming Python will exhibit you the way, with in-depth tutorials at the language's fundamental program domain names: process management, GUIs, and the internet. You'll additionally discover how Python is utilized in databases, networking, front-end scripting layers, textual content processing, and extra. This publication makes a speciality of known instruments and libraries to provide you a accomplished knowing of Python's many jobs in sensible, real-world programming.

You'll study language syntax and programming suggestions in a transparent and concise demeanour, with plenty of examples that illustrate either right utilization and customary idioms. thoroughly up to date for model 3.x, Programming Python additionally delves into the language as a software program improvement instrument, with many code examples scaled particularly for that purpose.

themes include:
Quick Python tour: construct an easy demo that comes with information illustration, object-oriented programming, item endurance, GUIs, and site basics
System programming: discover method interface instruments and strategies for command-line scripting, processing documents and folders, operating courses in parallel, and more
GUI programming: learn how to use Python's tkinter widget library
Internet programming: entry client-side community protocols and e mail instruments, use CGI scripts, and research web site implementation techniques
More how one can observe Python: enforce facts constructions, parse text-based details, interface with databases, and expand and embed Python

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Programming Python (4th Edition)

If you've mastered Python's basics, you're able to begin utilizing it to get genuine paintings performed. Programming Python will convey you ways, with in-depth tutorials at the language's fundamental software domain names: process management, GUIs, and the net. You'll additionally discover how Python is utilized in databases, networking, front-end scripting layers, textual content processing, and extra.

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You may want, for example, the Average value or the Minimum or Maximum. html. First, we will select the metric for CPU Utilization. We locate the Metric object in our list of metrics and then use the query method of the object to issue the query to CloudWatch. This returns a list of Python dictionary objects representing the samples from CloudWatch. Each sample consists of a timestamp, a unit of measurement, and the actual sample value. Here, we query the DiskReadBytes metric. Rather than the average, we are asking for the maximum value observed within the period.

And even though you may have forgotten about them, AWS has not, and you will continue to incur charges for these forgotten resources. Solution Use the EC2 API to find all running instances, for one or more accounts across all regions. Discussion Fortunately, the EC2 API makes it relatively easy to find all running instances, for all accounts, across all regions. Example 2-12 gathers all of that information together and prints a report, and also returns a data structure that can be used to terminate unused instances.

The time is now Wed, 21 Sep 2011 23:53:51 +0000! txt has, in fact, been created, indicating that the script has been run. The mechanism behind this is quite simple. ), it will try to execute the script as code. The script will be run as root, so it has full access to the instance. The next example will be a bit more ambitious. We will use several key features of a package called CloudInit, which is sort of a grown-up version of user-data scripts developed by Canonical. The CloudInit package is also automatically supported by modern Ubuntu distros as well as Amazon Linux AMI images.

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