When you run the pip command to install, uninstall a python package, you may encounter the error message ValueError: check_hostname requires server_hostname like below. This article will tell you how to fix it.
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When I import an existing project in eclipse, I meet the below issue message Some projects cannot be imported because they already exist in the workspace. I can see my project in the Projects list, but I can not check the checkbox before the project to import it. My eclipse project is a python PyDev
EasyGUI is a python module that can implement GUI applications very simple and easily. All the GUI object is created by a python function call, it is not an event-driven framework, you can use it flexibly in your python script. This article will tell you how to use it with some examples.
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We can use the order by child clause to sort the query results in the SQL statement, but it can only sort the query results by the simple and fixed order. How about ordering the query results in a complex sort order? This article will tell you how to implement it in the SQLite database
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The python defaultdict class is a subclass of dict class, it supports all the functions that dict class provides. But when you provide a key that does not exist in the python dict object, the dict object will return a KeyError. But the defaultdict object provides a default_factory attribute which is a python function and
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The python Counter class in the Collections package is a very useful tool class, which can automatically count the number of occurrences of each element in the container. The essence of Counter is a special python dictionary object, except that its keys are all the elements it contains, and its value records the number of occurrences
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The python collections.ChainMap class can combine multiple python dictionary objects into one dictionary object, this article will tell you how to use it with some examples.
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This article will show you an example about how to call MySQL stored procedure in python. It will use both the python mysql-connector-python library and the python pymysql library.
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When I run a python program in my eclipse Pydev project, I meet an error message ImportError: DLL load failed: %1 is not a valid Win32 application. This error occurs when I use the python sqlite3 module in my program. This article will tell you how to fix it.
When you run a python program on Windows, you may want to know whether the Python version is 32-bit to 64-bit, because some issues may happen when you run the python program with the wrong python bit version. This article will tell you how to check whether you python is 32-bit or 64 bit after
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