Suggestion on showing colours in Jupyter notebooks

[matteoferla]

This is a great module and I wanted to suggest an enhancement. In Jupyter Notebooks, an instance of an object is displayed (via IPython.display.display) in HTML according to the class _repr_html_ (and __repr__ as a fallback). As a result one can play with the styles attribute of an element say colouring text (color or the fill background).

from colorspace.colorlib import HCL, hexcols, colorobject
from copy import copy

def _repr_html_(self):
    zelf = copy(self)
    zelf.to('hex')
    colhexes = zelf.colors()
    styles= {'height': '50px',
             'width':'50px',
             'border':'5px solid grey',
             'border-top':'5px solid white', # get some Helmholtz–Kohlrausch effect action!
             'border-bottom':'5px solid black',
            }
    dict2style = lambda d: ';'.join(map(':'.join, d.items()))
    # jupyter runs off bootstrap-3 formatting
    divs = [f'<div class="col-md-1" style="{dict2style(styles)}; background:{colhex}"></div>' for colhex in colhexes]
    return '<div class="row">{inner}</div>'.format(inner=''.join(divs))

colorobject._repr_html_ = _repr_html_
hexcols(['#002147', '#F3AD5B', '#F7601E'])

EDIT. This affects the behaviour of IPython.display.display(object) or the last object returned in the cells (_), not print(object), which still preferentially runs off __str__()