def pyephem_earthsun_distance(time):
    """
    Calculates the distance from the earth to the sun using pyephem.

    Parameters
    ----------
    time : pd.DatetimeIndex

    Returns
    -------
    pd.Series. Earth-sun distance in AU.
    """

    import ephem

    sun = ephem.Sun()
    earthsun = []
    for thetime in time:
        sun.compute(ephem.Date(thetime))
        earthsun.append(sun.earth_distance)

    return pd.Series(earthsun, index=time)
def pyephem_earthsun_distance ( time ) : import ephem sun = ephem . Sun ( ) earthsun = [ ] for thetime in time : sun . compute ( ephem . Date ( thetime ) ) earthsun . append ( sun . earth_distance ) return pd . Series ( earthsun , index = time )
Calculates the distance from the earth to the sun using pyephem.

    Parameters
    ----------
    time : pd.DatetimeIndex

    Returns
    -------
    pd.Series. Earth-sun distance in AU.