Get hex format colorcode from a matplotlib colormap

getcolor.py

def get_colorcode(colormap, value):
    """
    Gets hex format colorcode (eg. '#ff0000') from a matplotlib colormap.
    
    Parameters
    ----------
    colormap : matplotlib.colors.Colormap
        Matplotlib colormap, a subclass of Colormap
    value : float
        Value in [0, 1) interval that specifies the color
    
    Returns
    -------
    colorcode: str
        Hex-formatted colorcode string
    """
    return "#"+"".join([hex(each)[2:].zfill(2) for each in colormap(value, bytes=True)][:-1])

# how to use
get_colorcode(cm.jet, 0.2)