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How to use _import_names method in autotest

Best Python code snippet using autotest_python

code_imports_analyzer.py

Source:code_imports_analyzer.py

1"""CodeImportsAnalyzer uses the ast module from Python's standard library2to get what modules are imported in given python files, then uses networkx to generate imports graph3"""4import ast5import asyncio6import aiohttp7import pybase648from .graph_analyzer import GraphAnalyzer9def construct_fetch_program_text_api_url(api_url):10    import os11    # to increase api rate limiting12    # https://docs.github.com/en/rest/overview/resources-in-the-rest-api#rate-limiting13    USER = os.environ.get("USER", "")14    PERSONAL_ACCESS_TOKEN = os.environ.get("PERSONAL_ACCESS_TOKEN", "")15    if USER and PERSONAL_ACCESS_TOKEN:16        protocol, api_url_components = api_url.split("://")17        new_api_url_components = f"{USER}:{PERSONAL_ACCESS_TOKEN}@{api_url_components}"18        return f"{protocol}://{new_api_url_components}"19    else:20        return api_url21async def get_program_text(session, python_file):22    # about Retry-After23    # https://docs.github.com/en/rest/guides/best-practices-for-integrators#dealing-with-secondary-rate-limits24    async with session.get(25        construct_fetch_program_text_api_url(python_file["url"]),26        headers={"Accept": "application/vnd.github.v3+json", "Retry-After": "5"},27    ) as response:28        if response.status == 200:29            data = await response.json()30            if data["encoding"] == "base64":31                return data["content"], python_file["path"]32            else:33                print(34                    f"WARNING: {python_file['path']}'s encoding is {data['encoding']}, not base64"35                )36class CodeImportsAnalyzer:37    class _NodeVisitor(ast.NodeVisitor):38        def __init__(self, imports):39            self.imports = imports40        def visit_Import(self, node):41            for alias in node.names:42                self.imports[-1]["imports"].append(43                    {"module": None, "name": alias.name, "level": -1}44                )45            self.generic_visit(node)46        def visit_ImportFrom(self, node):47            for alias in node.names:48                self.imports[-1]["imports"].append(49                    {"module": node.module, "name": alias.name, "level": node.level}50                )51            self.generic_visit(node)52    def __init__(self, python_files):53        self.python_imports = []54        self.graph_analyzer = GraphAnalyzer(is_directed=True)55        self.python_files = python_files56        self._node_visitor = CodeImportsAnalyzer._NodeVisitor(self.python_imports)57    async def parse_python_files(self):58        async with aiohttp.ClientSession() as session:59            tasks = []60            for python_file in self.python_files:61                tasks.append(62                    asyncio.ensure_future(get_program_text(session, python_file))63                )64            results = await asyncio.gather(*tasks)65            if results:66                for base64_program_text, python_file_path in results:67                    if base64_program_text:68                        self.python_imports += [69                            {70                                "file_name": python_file_path.split("/")[-1],71                                "file_path": python_file_path,72                                "imports": [],73                            }74                        ]75                        program = pybase64.b64decode(base64_program_text)76                        tree = ast.parse(program)77                        self._node_visitor.visit(tree)78    def generate_imports_graph(self):79        # TODO: thought on how to improve the graph generation logic80        # generate a dictionary of lists data structure81        # generate a graph based on a dictionary of lists82        for python_import in self.python_imports:83            _nodes = python_import["file_path"].split("/")84            if len(_nodes):85                # generate graph based on file_path86                # node/edge relationship means file/folder structure87                if len(_nodes) > 1:88                    # make last node and second last node as one node89                    # to solve the issue of duplicated file names using only last node90                    if len(_nodes) >= 3:91                        _nodes[-2] = _nodes[-2] + "/" + _nodes[-1]92                        del _nodes[-1]93                    self.graph_analyzer.add_edges_from_nodes(_nodes)94                else:95                    self.graph_analyzer.add_node(_nodes[0])96                # generate graph based on imported modules in each file97                if python_import["file_name"] != "__init__.py":98                    for _import in python_import["imports"]:99                        if _import["module"] is None:100                            _import_names = _import["name"].split(".")101                            _new_nodes = _import_names + [_nodes[-1]]102                            self.graph_analyzer.add_edges_from_nodes(_new_nodes)103                        else:104                            _import_names = _import["module"].split(".") + [105                                _import["name"]106                            ]107                            _new_nodes = _import_names + [_nodes[-1]]108                            self.graph_analyzer.add_edges_from_nodes(_new_nodes)109        return self.graph_analyzer.graph110    def report(self):111        from pprint import pprint...

utils.py

Source:utils.py

...6    def __init__(self):7        self.lines = []8        self.line_numbers = []9    def visit_Import(self, node):10        line = 'import {}'.format(self._import_names(node.names))11        self.line_numbers.append(node.lineno)12        self.lines.append(line)13    def visit_ImportFrom(self, node):14        line = 'from {}{} import {}'.format(15            node.level * '.',16            node.module or '',17            self._import_names(node.names))18        self.line_numbers.append(node.lineno)19        self.lines.append(line)20    def _import_names(self, names):21        return ', '.join(map(attrgetter('name'), names))22def extract_imports(source, verbose=True):23    tree = ast.parse(source)24    import_parser = ImportParser()25    import_parser.visit(tree)26    import_lines = []27    for line in import_parser.lines:28        if 'print_function' in line:29            import_lines.append(line + '\n')30        # skip imports for pycharm and eclipse31        elif '_pydev_' in line or 'java.lang' in line:32            continue33        else:34            import_lines.append('try:\n    {}\nexcept:\n    pass\n'.format(line))...

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