Python class variables are shared by all python class instances. In this tutorial, we will write some examples to illustrate how to use python class variables for python beginners.

We have installed gensim with conda. However, we find ValueError: numpy.ufunc size changed, may indicate binary incompatibility when we run gensim. How to fix this error? We will introduce you the way to fix it in this tutorial.

Sometimes, we need to convert a python string to hexadecimal to save, while we have to convert a hex to string when displaying it. How to do? To address this issue, we will use some python examples to tell you how to convert in this tutorial.

Python priority queque is another queue, which is not similar to fifo queue. It can save data with priority. We will use some examples to show python beginners how to use this queue in this tutorial.

FIFO queque is the basic data strucutre in computer science. How to implement it in python. To address this issue, in this tutorial, we will use some examples to show you understand and implement a fifo queue in python.

Python thread.setDaemon() can make a python thread become a daemon thread. What is daemon thread? How to use it? We will discuss these topics in this tutorial for python beginners.

When we import a python package in our python script, do you know how to find this package for python? The key is to use sys.path. In this tutorial, we will use some examples to help you understand it.

In this tutorial, we will use some examples to show you how to stop a running python thread initiatively in python script, which is very useful for you to operate python thread.

Python thread is widely used in python application, which is also an advanced tip for python beginners. In this tutorial, we will write some simple examples to  introduce how to create and start to run a python thread for python beginners.