1. Variable Scope. Generally, variables defined outside of the function are called global variables, and variables defined inside the function are called local variables. Global variables are available in all […]
When i run my python code, i meet an import error. The error message is : ImportError: No module named setuptools. The reason for this error is because we do […]
1. Class. The concept of classe, which occurs in many programming languages, is fundamental to object-oriented programming and is easy to understand. Class is used to abstract the common characteristics […]
I use eval() and exec() function in recent python development, and i am not sure which function to use in which scenario, so i investigate python’s document and write down […]
When i import python ssl module just after python is installed, it is prompted that ssl module cannot be found like below. This article will tell you how to resolve […]
Selenium is mainly used for automated testing, it support multiple browsers, it can simulate browser for web page loading and for solving JavaScript rendering problems in crawlers. This example will […]
In Python, the __new__ method is similar to the __init__ method, but if both exist, __new__ method executes first. In the base class object, __new__ is defined as a static […]
1. Get Current Time. >>> import datetime,time >>> >>> now = time.strftime(“%Y-%m-%d %H:%M:%S”) >>> >>> print(now) 2019-03-29 21:27:20 >>> >>> now = datetime.datetime.now() >>> >>> print(now) 2019-03-29 21:27:20.218849 2. Get […]
Python provides a variety of time and date processing methods, mainly in time and datetime modules. In this article i will show you some time and datetime module examples to […]
When writing Python code, we often encounter the problem of time format. The first thing is the conversion between timestamp and date time fromat string. The timestamp is the number […]
