Python Crash Course by Eric Matthes

By Eric Matthes

Python Crash path is a fast paced, thorough advent to Python that may have you ever writing courses, fixing difficulties, and making issues that paintings in no time.

In the 1st half the publication, you’ll know about simple programming options, corresponding to lists, dictionaries, periods, and loops, and perform writing fresh and readable code with routines for every subject. You’ll additionally the way to make your courses interactive and the way to check your code appropriately prior to including it to a venture. within the moment 1/2 the ebook, you’ll positioned your new wisdom into perform with 3 large initiatives: an area Invaders–inspired arcade video game, info visualizations with Python’s super-handy libraries, and an easy net app you could set up on-line.

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WatchPosition( onSuccess, onError, options); } 8. With the initial call methods created, we can now write the onSuccess function, which is executed after a successful response. The position object from the response is sent through as an argument to the function. 9. Declare some variables to store detailed information obtained from the response in the form of the timestamp, latitude, longitude, and accuracy variables. We'll also create the element variable to reference the geolocationData div element, within which our information will be displayed.

Timestamp + '
' + 'Move Top: ' + y + 'px
' + 'Move Left: ' + x + 'px'; 14. Our call to the accelerometer also requires the error handler, so let's write that now. '; } 15. Finally, we'll add in some CSS to create the dot marker used to display the position on our device:

16. When we run the application, we can move the element around the screen by titling the device.

How to do it... We are able to pass through an optional parameter containing various arguments to set up an interval and improve accuracy: 1.

2. Below the Cordova JavaScript reference, write a new JavaScript tag block. Within this we'll declare a new variable called watchID. 3. addEventListener( "deviceready", onDeviceReady, false); 4. Let's now add the onDeviceReady function which will execute a method called startWatch, written as follows: // The device is ready so let's // start watching the position function onDeviceReady() { startWatch(); } 5.

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