该版本的wordcloud的源码中显示不兼容python3.6
解决办法：修改wordcloud源码
修改前
508： box_size = draw.textbox((0, 0), word, font=transposed_font, anchor="lt")
510： result = occupancy.sample_position(box_size[3] + self.margin,
box_size[2] + self.margin,
random_state)修改后
508： box_size = draw.textsize(word, font=transposed_font)
510： result = occupancy.sample_position(box_size[1] + self.margin,
box_size[0] + self.margin,