We all know that python3 is the future of python programs. But there is still a lot of python 2 program and libraries in the world also. So if you want to run python-2 source code using Jupyter Notebook, it may be difficult to set up the environment. But use anaconda you can run python […]
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IPython is an enhanced Python interactive environment, you can run all Python source code in IPython. And it provides more features that make your development process easy. Jupyter notebook is a browser-server based website tool that can save your python source code in a .ipynb notebook file, and then when you submit the python source
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Anaconda provide conda command for you to do a lot of common tasks such as install / uninstall packages, create / remove isolated python environment etc. Isolated python environment is very useful when you develope Python application for different Python version. For example, if you want to run the Python app on both Python 2.7
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Anaconda is a scientific Python distribution that contains a lot of not often used scientific python libraries. If you want to do data analysis, scientific computing, you can install the anaconda and use it to implement what you want. But after I install anaconda on Linux, I found that I can not use it correctly.
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When you use SQLite3 as your Django application backend database, you may need to change or even drop tables from the SQLite3 database. This article will tell you how to do that.
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When you develop a Django app, you always need to change the model fields. But how to make the changes take effect (add/remove table column to/from backend database table ). To a beginner, this question may be confused. This article will tell you how to do it.
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If you are a blogger or publisher, you should know google is the most valuable traffic driver engine. So after you write an original article with hard work, the first thing is to let google crawl and index the article content, this can let google know you are the original owner of that article. Google
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You have learnd how to use Django model manager’s filter or exclude method to get query result data in article Django Simple CRUD Operation Example. To use filter method is so easy as below. Department.objects.filter(dept_desc__contains=’dev2qa’) <QuerySet [<Department: Development,Develop dev2qa.com website use Django>]> We can see that the filter function’s argument is dept_desc__contains=’dev2qa’, i think this is not difficult
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If you want to add an attribute to python class, you can use property() function or @property decorator. The two method all has advantages and disadvantages, and the goal of using that is to make code simple. After you define class attribute with property() function or @property decorator, your client code can invoke the class
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We all know that model data operation in Django is so easy, you do not need to write any sql command at all, what you need to do is just use model class’s attribute objects ‘s methods to create, query, update and delete mode data records in backend database table like below. Suppose our model
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