Pylint#

Pylint is a powerful static code analysis tool for Python that evaluates code against a set of coding standards and identifies potential errors, stylistic issues, and other code quality concerns.

Let’s consider an example to illustrate how Pylint works in practice.

Suppose we have the following Python script named example.py:

# example.py
def add_numbers(a, b):
    return a + b

result = add_numbers(3, 4)
print(result)

If we run pylint on this code using pylint example.py Pylint will generate a report providing feedback on the code. In this example, it might highlight certain issues such as missing docstrings, which are comments providing information about the purpose and usage of functions and modules. The output might look something like this:

************* Module example
example.py:1:0: C0111: Missing module docstring (missing-docstring)
example.py:1:0: C0103: Function name "add_numbers" doesn't conform to snake_case naming style (invalid-name)
example.py:1:0: C0111: Missing function docstring (missing-docstring)
example.py:5:4: W0104: Statement seems to have no effect (pointless-statement)
example.py:5:4: R1705: Unnecessary "else" after "return" (no-else-return)

------------------------------------
Your code has been rated at 5.45/10

In this output, Pylint points out issues such as missing docstrings, a naming convention violation, and a statement that seems to have no effect. It also scores the code out of 10.

Important

VerticaPy has a strict threshold below which any code will not be accepted. Have a look at the GitHub action in order to confirm the threshold value. It is recommended to have a value closer to 10 to be certain.

By using Pylint in this manner, developers can identify and address potential problems in their code, ensuring adherence to coding standards, improving readability, and ultimately enhancing the overall quality of their Python projects.