Python 如何解决opencv项目中runpy.py和_main___u;.py文件中的空列表错误

runpy.py 正如您在下面的python代码中看到的，我试图运行这两个文件，但它显示args的error list为空，所以我传递哪个参数来解决这个错误。 导入系统 导入importlib.machine#先导入#importlib，这样我们就可以通过-m测试#15386 导入importlib.util 导入类型 从pkgutil导入读取代码，获取导入程序

__all__ = [
    "run_module", "run_path",
]

class _TempModule(object):
    """Temporarily replace a module in sys.modules with an empty namespace"""
    def __init__(self, mod_name):
        self.mod_name = mod_name
        self.module = types.ModuleType(mod_name)
        self._saved_module = []

    def __enter__(self):
        mod_name = self.mod_name
        try:
            self._saved_module.append(sys.modules[mod_name])
        except KeyError:
            pass
        sys.modules[mod_name] = self.module
        return self

    def __exit__(self, *args):
        if self._saved_module:
            sys.modules[self.mod_name] = self._saved_module[0]
        else:
            del sys.modules[self.mod_name]
        self._saved_module = []

class _ModifiedArgv0(object):
    def __init__(self, value):
        self.value = value
        self._saved_value = self._sentinel = object()

    def __enter__(self):
        if self._saved_value is not self._sentinel:
            raise RuntimeError("Already preserving saved value")
        self._saved_value = sys.argv[0]
        sys.argv[0] = self.value

    def __exit__(self, *args):
        self.value = self._sentinel
        sys.argv[0] = self._saved_value

# TODO: Replace these helpers with importlib._bootstrap_external functions.
def _run_code(code, run_globals, init_globals=None,
              mod_name=None, mod_spec=None,
              pkg_name=None, script_name=None):
    """Helper to run code in nominated namespace"""
    if init_globals is not None:
        run_globals.update(init_globals)
    if mod_spec is None:
        loader = None
        fname = script_name
        cached = None
    else:
        loader = mod_spec.loader
        fname = mod_spec.origin
        cached = mod_spec.cached
        if pkg_name is None:
            pkg_name = mod_spec.parent
    run_globals.update(__name__ = mod_name,
                       __file__ = fname,
                       __cached__ = cached,
                       __doc__ = None,
                       __loader__ = loader,
                       __package__ = pkg_name,
                       __spec__ = mod_spec)
    exec(code, run_globals)
    return run_globals

def _run_module_code(code, init_globals=None,
                    mod_name=None, mod_spec=None,
                    pkg_name=None, script_name=None):
    """Helper to run code in new namespace with sys modified"""
    fname = script_name if mod_spec is None else mod_spec.origin
    with _TempModule(mod_name) as temp_module, _ModifiedArgv0(fname):
        mod_globals = temp_module.module.__dict__
        _run_code(code, mod_globals, init_globals,
                  mod_name, mod_spec, pkg_name, script_name)
    # Copy the globals of the temporary module, as they
    # may be cleared when the temporary module goes away
    return mod_globals.copy()

# Helper to get the full name, spec and code for a module
def _get_module_details(mod_name, error=ImportError):
    if mod_name.startswith("."):
        raise error("Relative module names not supported")
    pkg_name, _, _ = mod_name.rpartition(".")
    if pkg_name:
        # Try importing the parent to avoid catching initialization errors
        try:
            __import__(pkg_name)
        except ImportError as e:
            # If the parent or higher ancestor package is missing, let the
            # error be raised by find_spec() below and then be caught. But do
            # not allow other errors to be caught.
            if e.name is None or (e.name != pkg_name and
                    not pkg_name.startswith(e.name + ".")):
                raise
        # Warn if the module has already been imported under its normal name
        existing = sys.modules.get(mod_name)
        if existing is not None and not hasattr(existing, "__path__"):
            from warnings import warn
            msg = "{mod_name!r} found in sys.modules after import of " \
                "package {pkg_name!r}, but prior to execution of " \
                "{mod_name!r}; this may result in unpredictable " \
                "behaviour".format(mod_name=mod_name, pkg_name=pkg_name)
            warn(RuntimeWarning(msg))

    try:
        spec = importlib.util.find_spec(mod_name)
    except (ImportError, AttributeError, TypeError, ValueError) as ex:
        # This hack fixes an impedance mismatch between pkgutil and
        # importlib, where the latter raises other errors for cases where
        # pkgutil previously raised ImportError
        msg = "Error while finding module specification for {!r} ({}: {})"
        raise error(msg.format(mod_name, type(ex).__name__, ex)) from ex
    if spec is None:
        raise error("No module named %s" % mod_name)
    if spec.submodule_search_locations is not None:
        if mod_name == "__main__" or mod_name.endswith(".__main__"):
            raise error("Cannot use package as __main__ module")
        try:
            pkg_main_name = mod_name + ".__main__"
            return _get_module_details(pkg_main_name, error)
        except error as e:
            if mod_name not in sys.modules:
                raise  # No module loaded; being a package is irrelevant
            raise error(("%s; %r is a package and cannot " +
                               "be directly executed") %(e, mod_name))
    loader = spec.loader
    if loader is None:
        raise error("%r is a namespace package and cannot be executed"
                                                                 % mod_name)
    try:
        code = loader.get_code(mod_name)
    except ImportError as e:
        raise error(format(e)) from e
    if code is None:
        raise error("No code object available for %s" % mod_name)
    return mod_name, spec, code

class _Error(Exception):
    """Error that _run_module_as_main() should report without a traceback"""

# XXX ncoghlan: Should this be documented and made public?
# (Current thoughts: don't repeat the mistake that lead to its
# creation when run_module() no longer met the needs of
# mainmodule.c, but couldn't be changed because it was public)
def _run_module_as_main(mod_name, alter_argv=True):
    """Runs the designated module in the __main__ namespace

       Note that the executed module will have full access to the
       __main__ namespace. If this is not desirable, the run_module()
       function should be used to run the module code in a fresh namespace.

       At the very least, these variables in __main__ will be overwritten:
           __name__
           __file__
           __cached__
           __loader__
           __package__
    """
    try:
        if alter_argv or mod_name != "__main__": # i.e. -m switch
            mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
        else:          # i.e. directory or zipfile execution
            mod_name, mod_spec, code = _get_main_module_details(_Error)
    except _Error as exc:
        msg = "%s: %s" % (sys.executable, exc)
        sys.exit(msg)
    main_globals = sys.modules["__main__"].__dict__
    if alter_argv:
        sys.argv[0] = mod_spec.origin
    return _run_code(code, main_globals, None, '__main__', mod_spec)

def run_module(mod_name, init_globals=None,
               run_name=None, alter_sys=False):
    """Execute a module's code without importing it

       Returns the resulting top level namespace dictionary
    """
    mod_name, mod_spec, code = _get_module_details(mod_name)
    if run_name is None:
        run_name = mod_name
    if alter_sys:
        return _run_module_code(code, init_globals, run_name, mod_spec)
    else:
        # Leave the sys module alone
        return _run_code(code, {}, init_globals, run_name, mod_spec)

def _get_main_module_details(error=ImportError):
    # Helper that gives a nicer error message when attempting to
    # execute a zipfile or directory by invoking __main__.py
    # Also moves the standard __main__ out of the way so that the
    # preexisting __loader__ entry doesn't cause issues
    main_name = "__main__"
    saved_main = sys.modules[main_name]
    del sys.modules[main_name]
    try:
        return _get_module_details(main_name)
    except ImportError as exc:
        if main_name in str(exc):
            raise error("can't find %r module in %r" %
                              (main_name, sys.path[0])) from exc
        raise
    finally:
        sys.modules[main_name] = saved_main


def _get_code_from_file(run_name, fname):
    # Check for a compiled file first
    with open(fname, "rb") as f:
        code = read_code(f)
    if code is None:
        # That didn't work, so try it as normal source code
        with open(fname, "rb") as f:
            code = compile(f.read(), fname, 'exec')
    return code, fname

def run_path(path_name, init_globals=None, run_name=None):
    """Execute code located at the specified filesystem location

       Returns the resulting top level namespace dictionary

       The file path may refer directly to a Python script (i.e.
       one that could be directly executed with execfile) or else
       it may refer to a zipfile or directory containing a top
       level __main__.py script.
    """
    if run_name is None:
        run_name = "<run_path>"
    pkg_name = run_name.rpartition(".")[0]
    importer = get_importer(path_name)
    # Trying to avoid importing imp so as to not consume the deprecation warning.
    is_NullImporter = False
    if type(importer).__module__ == 'imp':
        if type(importer).__name__ == 'NullImporter':
            is_NullImporter = True
    if isinstance(importer, type(None)) or is_NullImporter:
        # Not a valid sys.path entry, so run the code directly
        # execfile() doesn't help as we want to allow compiled files
        code, fname = _get_code_from_file(run_name, path_name)
        return _run_module_code(code, init_globals, run_name,
                                pkg_name=pkg_name, script_name=fname)
    else:
        # Finder is defined for path, so add it to
        # the start of sys.path
        sys.path.insert(0, path_name)
        try:
            # Here's where things are a little different from the run_module
            # case. There, we only had to replace the module in sys while the
            # code was running and doing so was somewhat optional. Here, we
            # have no choice and we have to remove it even while we read the
            # code. If we don't do this, a __loader__ attribute in the
            # existing __main__ module may prevent location of the new module.
            mod_name, mod_spec, code = _get_main_module_details()
            with _TempModule(run_name) as temp_module, \
                 _ModifiedArgv0(path_name):
                mod_globals = temp_module.module.__dict__
                return _run_code(code, mod_globals, init_globals,
                                    run_name, mod_spec, pkg_name).copy()
        finally:
            try:
                sys.path.remove(path_name)
            except ValueError:
                pass


if __name__ == "__main__":
    # Run the module specified as the next command line argument
    if len(sys.argv) < 2:
        print("No module specified for execution", file=sys.stderr)
    else:
        del sys.argv[0] # Make the requested module sys.argv[0]
        _run_module_as_main(sys.argv[0])

from __future__ import print_function
import sys
import pkg_resources as pkg
import PyInstaller.__main__ as pyi
import os

args = sys.argv[1:]
print(args)
main_script = args.pop(0)
web_folder = args.pop(0)

print("Building executable with main script '%s' and web folder '%s'...\n" %
      (main_script, web_folder))

eel_js_file = pkg.resource_filename('eel', 'eel.js')
js_file_arg = '%s%seel' % (eel_js_file, os.pathsep)
web_folder_arg = '%s%s%s' % (web_folder, os.pathsep, web_folder)

needed_args = ['--hidden-import', 'bottle_websocket',
               '--add-data', js_file_arg, '--add-data', web_folder_arg]
full_args = [main_script] + needed_args + args

print('Running:\npyinstaller', ' '.join(full_args), '\n')

pyi.run(full_args)