DefaultColor(defaultdict)

makegraphs.py

matplotcolors= ['b','g','r','c','m','y','k']
defaultcolorlist = ["#00af64","#0b61a4","#ff9200","#ff4900","#9c02a7"]
defaultcolorlist.extend(matplotcolors)

from collections import defaultdict
class DefaultColor(defaultdict):
    """ defaultdict that returns sequential elements of a list(if not specified, a color) each time it is
    called Note that if input list is len(1) it will always return the same
    value"""
    def __init__(self,colorlst = defaultcolorlist):
        self.color_len = len(colorlst)
        self.current_index = 0
        self.colors = colorlst
        super(DefaultColor, self).__init__(lambda : self.sendcolor())

    def sendcolor(self):
        # check if we're at end of color list, if so, reset index
        color_index = (self.current_index
                        if self.current_index < self.color_len
                        else 0)
        # increment current_index for next time
        self.current_index = color_index + 1
        # return the color
        return self.colors[color_index]

This works, the only issue is finding a few more colors. (makes it easier to graph when you don't have to deal with color choices initially). Need a defaultdict here because want to be consistent with colors.