def get(url, session=None, silent=not debug, **kwargs):
    """Retrieve a given URL and log response.

    :param session: a :class:`requests.Session` object.
    :param silent: if **True**, response status and URL will not be printed.
    """
    session = session or requests
    kwargs["verify"] = kwargs.get("verify", True)
    r = session.get(url, **kwargs)
    if not silent:
        status_code = click.style(
            str(r.status_code),
            fg="green" if r.status_code in (200, 304) else "red")
        click.echo(status_code + " " + url)
        if r.status_code == 404:
            raise PackageNotFoundError
    return r
def _contour(ax, title, elements, values, label='', isa=None):
    from matplotlib.patches import Polygon
    from matplotlib.collections import PatchCollection
    if ax == 0:
        ax = plt.gca()
    ax.set_aspect('equal')
    ax.set_title(title, fontsize=18)
    if isa:
        for se in isa.superelements:
            ax.add_patch(Polygon([n.xy
                                  for nc in se.nodechains
                                  for n in nc.nodes],
                                 color='gray', alpha=0.1, lw=0))
    valid_values = np.logical_not(np.isnan(values))
    patches = np.array([Polygon([v.xy for v in e.vertices])
                       for e in elements])[valid_values]
    # , cmap=matplotlib.cm.jet, alpha=0.4)
    p = PatchCollection(patches, alpha=1.0, match_original=False)
    p.set_array(np.asarray(values)[valid_values])
    ax.add_collection(p)
    cb = plt.colorbar(p)
    for patch in np.array([Polygon([v.xy for v in e.vertices],
                                   fc='white', alpha=1.0)
                           for e in elements])[np.isnan(values)]:
        ax.add_patch(patch)
    if label:
        cb.set_label(label=label, fontsize=18)
    ax.autoscale(enable=True)
    ax.axis('off')