画出来的直方图：
这是重量数据实际情况：
weight = [3, 30, 40, 45, 50, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 80, 80, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 180, 180, 200, 200, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 260, 260, 270, 300, 300, 300, 300, 300, 350, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 1000, 1000, 1000, 1500]
weight_and_counts= [{'3': 1}, {'30': 1}, {'40': 1}, {'45': 1}, {'50': 8}, {'60': 6}, {'80': 2}, {'90': 1}, {'100': 10}, {'180': 2}, {'200': 2}, {'250': 34}, {'260': 2}, {'270': 1}, {'300': 5}, {'350': 1}, {'500': 31}, {'1500': 1}]
很明显250有34个，500有31个，和直方图完全不同**，为什么，怎么解决？**
另外有哪些好视频、相关学习资料可以推荐？一边解决问题一边大量查很耗费时间啊。
