各国家用户消费分布 import numpy as np import pandas as pd import matplotlib.pyplot as plt data = { 'China': [1000, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2500], 'America': [1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100], 'Britain': [1000