How to determine which functions are used in Python code?

To know which functions are used in a Python code, you can use the following method:

1. Manually inspect the code: Identify and record all functions used by reading through the code. This method is suitable for small projects or situations with a limited amount of code.
2. Many integrated development environments (IDEs) offer code analysis features that can automatically help you search and list functions in your code. For example, using IDEs like PyCharm or Visual Studio Code, you can utilize code navigation or intelligent code completion features to find and list functions.
3. Utilize code analysis tools: Python provides several third-party libraries and tools that can assist in analyzing code to identify the functions being used. For instance, the ast module can be used to parse code and extract function information, or static code analysis tools like pylint and flake8 can be utilized to check the usage of functions in the code.
4. Utilize code coverage tools: Code coverage tools can assist in analyzing the execution paths and call relationships within the code. By running the code and recording function calls, you can obtain a list of functions actually used in the code. For example, using the pytest-cov plugin can generate a code coverage report and list out the called functions.

Regardless of the method used, a thorough analysis and testing of the code is required to ensure all functions being used are identified.