How-to articles, tricks, and solutions about PYTHON

In Django, null=True and blank=True are both used to specify options for fields in a model.

In Python, classes can be divided into two types: old-style and new-style.

pip is the package installer for Python.

The append method adds an item to the end of a list.

In Python 2.X, range and xrange are used to generate a sequence of numbers.

There are many different tools that you can use to create isolated Python environments, each with their own benefits and drawbacks.

The easiest way to remove all packages installed by pip is to use the command pip freeze to get a list of all installed packages, and then pipe that list to pip uninstall -y, like this:

The maximum recursion depth in Python is typically 1000, although this can vary depending on the operating system and system settings.

In Python, a single underscore "_" before an object name indicates that the object is meant to be private, meaning that it should not be directly accessed or modified outside of the class that it is defined in.

In Python, variable and function names should be lowercase, with words separated by underscores.

In Python, kwargs is a way to pass a keyworded, variable-length argument list.

The self parameter in Python is used to refer to the instance of an object within a class.

In Python 3, you can use the http.server module to run a simple HTTP server.

The Python equivalent for a case/switch statement is the if-elif-else structure.

Here's a code snippet for making an HTTP GET request using the requests library in Python:

In Python, the assert statement is used to check if a certain condition is true, and if it is not true, raise an exception.

"Unexpected indent" in Python means that the indentation level of a line of code is not what the interpreter was expecting.

In Python, you can use the isinstance function to check if an object is an instance of a particular type.

Lists and tuples are both used to store multiple items in a single variable, but they are different in a few key ways.

cla() is used to clear the current axis of a plot in matplotlib.

You can raise the ValueError exception when you encounter bad or illegal argument combinations in Python.

You can find the version of Python that you have installed by running the following command in your command prompt or terminal:

The "TypeError: string indices must be integers" error is raised when you try to access an element of a DataFrame or Series using a string index instead of an integer index.

Without a specific code snippet and the JSON data that is causing issues, it is difficult to determine why Python is unable to parse the data.

There are several reasons why you might see the SyntaxError: invalid syntax error in a line with apparently valid syntax.