Find the function call with most arguments in a folder and subfolders

function_call_with_most_args.py

#! /bin/python
import ast
import pathlib
from sys import path
from typing import Iterator


def function_calls_arg_numbers(tree: ast.Module) -> Iterator[tuple[int, int]]:
    for node in ast.walk(tree):
        if not isinstance(node, ast.Call):
            continue
        yield (len(node.args) + len(node.keywords), node.lineno)


if __name__ == "__main__":
    cwd = pathlib.Path(".")
    results = []
    for path in cwd.rglob("*.py"):
        source = path.read_text()
        tree = ast.parse(source)
        num_args, lineno = max(function_calls_arg_numbers(tree), default=(0, 0))
        print(f"{path}:{lineno}", num_args)
        results.append((num_args, path, lineno))
    print("...")
    results.sort(reverse=True)
    for (args, path, lineno) in results[:20]:
        print(f"{path}:{lineno}", args)