We usually use select statement to select rows from mysql database, however, these rows are ordered by primay key, not are orderded randomly. In this tutorial, we will introduce how to select random rows from mysql.
When we are deleting some files or folders on win 10, you may can not delete them, beacuse they are being used by other applications or processes. In this tutorial, we will tell you how to find out this application or process.
We can delete files and folders easily on windows 10 by selecting them and pressing del key. However, if a folder contians more than 2,000 files, you may find it will take a long time to delete them. Is there any way to delete them rapidly? The answer is yes.
If you have used python return statement in python try, except and finally, it is may be confused to understand. In this tutorial, we will explain the return value in python try, except and finally.
We often have to get a substring from a python string in python application, however, there is not a python function to get like php function substring(). In this tutorial, we will introduce to you how to get a substring from a python string.
When we are using python 3 to open a url, we may find error like:
In python, we can use os.remove() function to delete a file permanently, however, we can not find the deleted file in our recycle bin. If you have deleted wrong files? Which will be a big problem. In this tutorial, we will introduce how to delete a file with sending it to our recycle bin in win 10 with python.
Python return statement is often used in python function. What does it mean? In this tutorial, we will introduce it for python beginners.
Python exception handling is one of most important part of python tutorial, in this tutorial, we will introduce some basic usage of python exception for beginners. You can learn how to handle python exception.
Python pandas library can allow us to load data from csv files, however, when you are loading data, you may find this error: pandas.errors.ParserError: Error tokenizing data. C error. In this tutorial, we will introduce how to fix this error.