How-to articles, tricks, and solutions about PYTHON

You can use pip to install a package from a git repository and specify a branch by using the following syntax:

pip is the package installer for Python.

You can use the __file__ attribute of a module to retrieve its path.

In the above code snippet, the to_csv method is used to write a DataFrame to a CSV file.

In Python, the logical "and" operator is represented by the and keyword.

You can catch all exceptions by using the Exception class in the except block, like this:

Here is a code snippet that uses the os and glob modules to find all files in a directory with the extension '.txt':

You can use the following command to check the version of a package installed with pip:

In Python, you can set environment variables using the os module.

To unload a Python module, you can use the del statement to remove it from memory.

You can use the join() method to concatenate (join) items in a list to a single string in Python.

You can use the shutil module in Python to remove a folder that is not empty.

List comprehension and the combination of lambda functions and the filter() function in Python are both used to filter a list and return a new list with only the elements that satisfy a certain condition.

You can use the uuid module in Python to generate a globally unique identifier (GUID), also known as a universally unique identifier (UUID).

Import the "urllib" module:

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:

It is recommended to use the in keyword to check if a key exists in a Python dict, rather than the has_key() method.

In Python, you can use the self keyword to refer to the instance of the enclosing class within a method.

You can use the datetime module in Python to convert a UNIX timestamp string to a readable date.

Here is an example of how to convert a list of dictionaries to a pandas DataFrame:

In Python, you can use the built-in function format() to print a number with commas as thousands separators.

You can use the json module in Python to convert a string representation of a dictionary to a dictionary.

You can use the datetime module in Python to subtract a day from a date.

You can use the .head() method to print the first few rows of a Pandas Series or DataFrame in a "pretty" format.

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