python类main()的实例源码

def gen_lib():
        """Build libs locally for app

        Using the setup.py this method will install all required python modules locally
        to be used for local testing.
        """
        lib_directory = 'lib_{}.{}.{}'.format(
            sys.version_info.major, sys.version_info.minor, sys.version_info.micro)
        app_path = os.getcwd()
        app_name = os.path.basename(app_path)

        lib_path = os.path.join(app_path, lib_directory)
        if not os.path.isdir(lib_path):
            os.mkdir(lib_path)

        os.environ['PYTHONPATH'] = '{}'.format(lib_path)
        stdout = sys.stdout
        stderr = sys.stderr
        try:
            with open(os.path.join(app_path, '{}-libs.log'.format(app_name)), 'w') as log:
                sys.stdout = log
                sys.stderr = log
                easy_install.main(['-axZ', '-d', lib_path, str(app_path)])
        except SystemExit as e:
            raise Exception(str(e))
        finally:
            sys.stdout = stdout
            sys.stderr = stderr

        if os.listdir(lib_path):
            err = 'Encountered error running easy_install for {}.  Check log file for details.'
            raise Exception(err.format(app_name))

        build_path = os.path.join(app_path, 'build')
        if os.access(build_path, os.W_OK):
            shutil.rmtree(build_path)
        temp_path = os.path.join(app_path, 'temp')
        if os.access(temp_path, os.W_OK):
            shutil.rmtree(temp_path)
        egg_path = os.path.join(app_path, app_name + '.egg-info')
        if os.access(egg_path, os.W_OK):
            shutil.rmtree(egg_path)

def main():
    parser = optparse.OptionParser()
    parser.add_option('-d', '--download-dir',
        help='Directory with maually downloaded python modules.'
    )
    opts, _ = parser.parse_args()

    # Install packages.
    for k, v in _PACKAGES.items():
        # Test python version for module.
        if k in _PY_VERSION:
            # Python version too old, skip module.
            if PYVER < _PY_VERSION[k]:
                continue
        try:
            __import__(k)
            print('Already installed...', k)
        # Module is not available - install it.
        except ImportError:
            # If not url or module name then look for installers in download area.
            if not v[0].startswith('http') and v[0].endswith('exe'):
                files = []
                # Try all file patterns.
                for pattern in v:
                    pattern = os.path.join(opts.download_dir, pattern)
                    files += glob.glob(pattern)
                # No file with that pattern was not found - skip it.
                if not files:
                    print('Skipping module...', k)
                    continue
                # Full path to installers in download directory.
                v = files
            print('Installing module...', k)
            # Some modules might require several .exe files to install.
            for f in v:
                print(' ', f)
                # Use --no-deps ... installing module dependencies might fail
                # because easy_install tries to install the same module from
                # PYPI from source code and if fails because of C code that
                # that needs to be compiled.
                try:
                    easy_install.main(['--no-deps', '--always-unzip', f])
                except Exception:
                    print(' ', k, 'installation failed')

def test_setup_requires_honors_fetch_params(self):
        """
        When easy_install installs a source distribution which specifies
        setup_requires, it should honor the fetch parameters (such as
        allow-hosts, index-url, and find-links).
        """
        # set up a server which will simulate an alternate package index.
        p_index = setuptools.tests.server.MockServer()
        p_index.start()
        netloc = 1
        p_index_loc = urlparse(p_index.url)[netloc]
        if p_index_loc.endswith(':0'):
            # Some platforms (Jython) don't find a port to which to bind,
            #  so skip this test for them.
            return

        # I realize this is all-but-impossible to read, because it was
        #  ported from some well-factored, safe code using 'with'. If you
        #  need to maintain this code, consider making the changes in
        #  the parent revision (of this comment) and then port the changes
        #  back for Python 2.4 (or deprecate Python 2.4).

        def install(dist_file):
            def install_at(temp_install_dir):
                def install_env():
                    ei_params = ['--index-url', p_index.url,
                        '--allow-hosts', p_index_loc,
                        '--exclude-scripts', '--install-dir', temp_install_dir,
                        dist_file]
                    def install_clean_reset():
                        def install_clean_argv():
                            # attempt to install the dist. It should fail because
                            #  it doesn't exist.
                            self.assertRaises(SystemExit,
                                easy_install_pkg.main, ei_params)
                        argv_context(install_clean_argv, ['easy_install'])
                    reset_setup_stop_context(install_clean_reset)
                environment_context(install_env, PYTHONPATH=temp_install_dir)
            tempdir_context(install_at)

        # create an sdist that has a build-time dependency.
        self.create_sdist(install)

        # there should have been two or three requests to the server
        #  (three happens on Python 3.3a)
        self.assertTrue(2 <= len(p_index.requests) <= 3)
        self.assertEqual(p_index.requests[0].path, '/does-not-exist/')

def main():
    parser = optparse.OptionParser()
    parser.add_option('-d', '--download-dir',
        help='Directory with maually downloaded python modules.'
    )
    opts, _ = parser.parse_args()

    # Install packages.
    for k, v in _PACKAGES.items():
        # Test python version for module.
        if k in _PY_VERSION:
            # Python version too old, skip module.
            if PYVER < _PY_VERSION[k]:
                continue
        try:
            __import__(k)
            print('Already installed...', k)
        # Module is not available - install it.
        except ImportError:
            # If not url or module name then look for installers in download area.
            if not v[0].startswith('http') and v[0].endswith('exe'):
                files = []
                # Try all file patterns.
                for pattern in v:
                    pattern = os.path.join(opts.download_dir, pattern)
                    files += glob.glob(pattern)
                # No file with that pattern was not found - skip it.
                if not files:
                    print('Skipping module...', k)
                    continue
                # Full path to installers in download directory.
                v = files
            print('Installing module...', k)
            # Some modules might require several .exe files to install.
            for f in v:
                print(' ', f)
                # Use --no-deps ... installing module dependencies might fail
                # because easy_install tries to install the same module from
                # PYPI from source code and if fails because of C code that
                # that needs to be compiled.
                try:
                    easy_install.main(['--no-deps', '--always-unzip', f])
                except Exception:
                    print(' ', k, 'installation failed')

def gen_lib():
        """Build libs locally for app

        Using the setup.py this method will install all required python modules locally
        to be used for local testing.
        """
        lib_directory = 'lib_{}.{}.{}'.format(
            sys.version_info.major, sys.version_info.minor, sys.version_info.micro)
        app_path = os.getcwd()
        app_name = os.path.basename(app_path)

        lib_path = os.path.join(app_path, lib_directory)
        if not os.path.isdir(lib_path):
            os.mkdir(lib_path)

        os.environ['PYTHONPATH'] = '{}'.format(lib_path)
        stdout = sys.stdout
        stderr = sys.stderr
        try:
            with open(os.path.join(app_path, '{}-libs.log'.format(app_name)), 'w') as log:
                sys.stdout = log
                sys.stderr = log
                easy_install.main(['-axZ', '-d', lib_path, str(app_path)])
        except SystemExit as e:
            raise Exception(str(e))
        finally:
            sys.stdout = stdout
            sys.stderr = stderr

        if os.listdir(lib_path):
            err = 'Encountered error running easy_install for {}.  Check log file for details.'
            raise Exception(err.format(app_name))

        build_path = os.path.join(app_path, 'build')
        if os.access(build_path, os.W_OK):
            shutil.rmtree(build_path)
        temp_path = os.path.join(app_path, 'temp')
        if os.access(temp_path, os.W_OK):
            shutil.rmtree(temp_path)
        egg_path = os.path.join(app_path, app_name + '.egg-info')
        if os.access(egg_path, os.W_OK):
            shutil.rmtree(egg_path)