def extract_bower_zipfile(self, zip_file, dest, expected_version=None):
        bower_json = None
        root = None
        deps_installed = []
        for info in zip_file.infolist():
            if PurePath(info.filename).name == "bower.json":
                with zip_file.open(info) as f:
                    bower_json = json.load(f)
                    root = str(PurePath(info.filename).parent)
                break
        version = bower_json["version"]
        if expected_version is not None:
            expected_version = Bower.clean_semver(expected_version)
            if not semver.match(version, expected_version):
                click.secho("error: versions do not match ({} =/= {})".format(
                    version, expected_version))
                raise InvalidPackageError
        if "dependencies" in bower_json:
            for package, version in bower_json["dependencies"].items():
                url = Bower.get_package_url(package)
                deps_installed.extend(self.get_bower_package(
                    url, dest=dest, version=version))
        ignore_patterns = [GitIgnorePattern(ig) for ig in bower_json["ignore"]]
        path_spec = PathSpec(ignore_patterns)
        namelist = [path for path in zip_file.namelist()
                    if PurePath(path).parts[0] == root]
        ignored = list(path_spec.match_files(namelist))
        for path in namelist:
            dest_path = PurePath(
                bower_json["name"],
                *PurePath(path).parts[1:])

            if path in ignored:
                continue

            for path in ignored:
                for parent in PurePath(path):
                    if parent in ignored:
                        continue

            if path.endswith("/"):
                if list(path_spec.match_files([str(dest_path)])):
                    ignored.append(PurePath(path))
                elif not (dest / dest_path).is_dir():
                    (dest / dest_path).mkdir(parents=True)
            else:
                target_path = dest / dest_path.parent / dest_path.name
                source = zip_file.open(path)
                target = target_path.open("wb")
                with source, target:
                    shutil.copyfileobj(source, target)
        deps_installed.append((bower_json["name"], bower_json["version"]))
        return deps_installed
def characteristics(char, title=''):
    fig, axs = plt.subplots(2, 2, figsize=(10, 8), sharex=True)
    if title:
        fig.suptitle(title)

    n = np.array(char['n'])*60
    pmech = np.array(char['pmech'])*1e-3

    axs[0, 0].plot(n, np.array(char['T']), 'C0-', label='Torque')
    axs[0, 0].set_ylabel("Torque / Nm")
    axs[0, 0].grid()
    axs[0, 0].legend(loc='center left')
    ax1 = axs[0, 0].twinx()
    ax1.plot(n, pmech, 'C1-', label='P mech')
    ax1.set_ylabel("Power / kW")
    ax1.legend(loc='lower center')

    axs[0, 1].plot(n[1:], np.array(char['u1'][1:]), 'C0-', label='Voltage')
    axs[0, 1].set_ylabel("Voltage / V",)
    axs[0, 1].grid()
    axs[0, 1].legend(loc='center left')
    ax2 = axs[0, 1].twinx()
    ax2.plot(n[1:], char['cosphi'][1:], 'C1-', label='Cos Phi')
    ax2.set_ylabel("Cos Phi")
    ax2.legend(loc='lower right')

    if 'id' in char:
        axs[1, 0].plot(n, np.array(char['id']), label='Id')
    if 'iq' in char:
        axs[1, 0].plot(n, np.array(char['iq']), label='Iq')
    axs[1, 0].plot(n, np.array(char['i1']), label='I1')
    axs[1, 0].set_xlabel("Speed / rpm")
    axs[1, 0].set_ylabel("Current / A")
    axs[1, 0].legend(loc='center left')
    if 'beta' in char:
        ax3 = axs[1, 0].twinx()
        ax3.plot(n, char['beta'], 'C3-', label='Beta')
        ax3.set_ylabel("Beta / °")
        ax3.legend(loc='center right')
    axs[1, 0].grid()

    plfe = np.array(char['plfe'])*1e-3
    plcu = np.array(char['plcu'])*1e-3
    pl = np.array(char['losses'])*1e-3
    axs[1, 1].plot(n, plcu, 'C0-', label='Cu Losses')
    axs[1, 1].plot(n, plfe, 'C1-', label='Fe Losses')
    axs[1, 1].set_ylabel("Losses / kW")
    axs[1, 1].legend(loc='center left')
    axs[1, 1].grid()
    axs[1, 1].set_xlabel("Speed / rpm")
    ax4 = axs[1, 1].twinx()
    ax4.plot(n[1:-1], char['eta'][1:-1], 'C3-', label="Eta")
    ax4.legend(loc='upper center')
    ax4.set_ylabel("Efficiency")

    fig.tight_layout()