Calling this function with `palette=None` will return the current matplotlib color cycle.
调用此函数并设置 `palette=None` 会返回当前 matplotlib 色彩循环。
Matplotlib palettes can be specified as reversed palettes by appending “_r” to the name or as “dark” palettes by appending “_d” to the name. (These options are mutually exclusive, but the resulting list of colors can also be reversed).
> Number of colors in the palette. If `None`, the default will depend on how `palette` is specified. Named palettes default to 6 colors, but grabbing the current palette or passing in a list of colors will not change the number of colors unless this is specified. Asking for more colors than exist in the palette will cause it to cycle.
Show one of the other “seaborn palettes”, which have the same basic order of hues as the default matplotlib color cycle but more attractive colors. Calling with the name of a palette will return 6 colors by default:
Make a “dark” matplotlib sequential palette variant. (This can be good when coloring multiple lines or points that correspond to an ordered variable, where you don’t want the lightest lines to be invisible):