Random string is used widely in password, uuid, captcha text, verification number etc. Python string, random and uuid module provide method to generate random string with digit or alphabet content or digital and alphabet mixed content. This article will show you some examples.
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This example tell you how to convert a python list element to a python string, the list data can be pure string data or mix data type such as string, number and boolean. The methods below also applicable to python tuple ( read only python list ), just replace [ ] to ( ). Below
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The unit test is very useful and helpful in programming. Python provides a built-in unittest module for you to test python class and functions. With third-party modules such as html-testRunner and xmlrunner , you can also generate test case reports in HTML or XML format. This article will tell you how to do that.
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When you develop a python application with the eclipse PyDev plugin, you always need to use some third-party python module libraries. This article will just tell you how to add library in python eclipse project and how to use the library in your python source code.
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Swig is the abbreviation of Simplified Wrapper and Interface Generator, it can give script language such as python the ability to invoke C and C++ libraries interface method indirectly. It is implemented by compiling the C/C++ declaration file (.i file) into the C/C++ wrapper source code (.c or.cxx) file. By calling such wrapper interfaces directly, scripting languages
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This example will show you how to use various android.graphics.Canvas class’s methods to draw text, point, line, circle, rectangle, oval, arc, and self-defined shapes. 1. Android Graphics Canvas Draw Method Example. If you can not watch the above video, you can see it on the youtube URL https://youtu.be/HtR0yY0kCcI The above example demo video shows that
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This example will show you how to change the android device screen orientation ( horizontal to vertical vice versa ) and how to avoid activity restart during the screen orientation change.
Android Change Orientation Without Restarting Activity Example Read More »
The root user is not enabled by default in macOS. So when you run some installation program that always needs root permission you should get errors. The error message may confuse you, it sometimes tells you the password is wrong but the real reason is that the root user has never been enabled at all.
How To Enable Root User Or Change Root Password In MacOS Read More »
Pinch zoom ( in or out ) is an often-used gesture in android applications. It is very user-friendly and smooth to display something bigger or smaller to watch. This example will show you how to implement pinch zoom on an image in the android application.
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In some cases, you may want to capture custom-defined gestures in your android application. And at the same time, you may also want to detect general gestures ( such as double-tap, long press, scroll, etc) on the special view component. This article will tell you how to combine custom-defined gestures and general gestures together in
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