How To Get / Set Http Headers, Cookies And Manage Sessions Use Python Requests Module

In the previous article How To Use Python Requests Module To Send Get Or Post Request Example, we have learned how to install and use the python requests module to send HTTP Get and Post request to a web server. It also tells you how to post form data or pass query string parameters use […]

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How To Fix Python Error Certificate Verify Failed: Unable To Get Local Issuer Certificate In Mac OS

When I run Python code in Mac OS, I meet a certificate verify failed error like this ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056). This error confused me a lot of time. And after googling the error, I finally found the solution to fix it, below are the steps.

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How To Connect Storyboard UI Component To ViewController Class Code

When we develop iOS app use Xcode, we design the app GUI ( graphical user interface ) in Main.storyboard file. And the swift source code is edited in ViewController.swift file. But how to use swift source code in ViewController.swift file to modify storyboard UI component’s attributes or process UI component’s action event? This article will

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How To Fix Could Not Install Packages Due To An Environmenterror: [winerror 5] Access Is Denied Error When Install Python Module In Windows

When I use the pip command to install a python module ( pip install requests )  or upgrade pip ( python -m pip install –upgrade pip ) in windows, I meet the below error message. Could not install packages due to an EnvironmentError: [WinError 5] Access is denied: ‘C:\\Program Files (x86)\\Python37-32\\Lib\\site-packages\\pip\\__init__.py’ Consider using the `–user`

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How To Fix Mouse And Keyboard Stuck After Install Mac OS On VirtualBox

After installing macOS high sierra in VirtualBox, when I start the virtual machine, it popup the Keyboard Setup Assitant window like below. For macOS beginners, this window is so strange and I do not know what to do. And if you are not lucky, you will find your mouse and keyboard are all out of

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How To Install Virtualbox Extension Pack Correctly

When you use oracle VirtualBox, sometimes you need to install the VirtualBox extension. Because the VirtualBox extension provides you add-on functions such as virtual USB 2.0 & 3.0 support, VirtualBox remote desktop protocol support, Intel PXE boot ROM, Disk image encryption with AES algorithm, Host webcam passthrough, etc. But when you install it, you may

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