How Can I Get a Python Variable's Name as a String?

Retrieving Variable Names as Strings in Python

Unlike functions, variables in Python do not have a dedicated name attribute to access their name. To fulfill this need, a unique approach is required.

Method Using Python 3.8 F-string Debugging

With Python 3.8, you can leverage the debugging capabilities of f-strings to extract variable names. This is achieved by combining the variable with an empty string, as shown below:

>>> foo = dict()
>>> f'{foo=}'.split('=')[0]
'foo'

Limitations of the F-string Method

While the f-string method is effective, it has a drawback. It requires you to know the name of the variable in advance, as you need to manually add f'{variable=}' to the expression.

Other Approaches

Alternative approaches exist, such as using the inspect module or creating a custom metaclass, but they are more complex and generally not recommended.

The above is the detailed content of How Can I Get a Python Variable's Name as a String?. For more information, please follow other related articles on the PHP Chinese website!