df = pd.DataFrame()
df['country'] = ["中国",'美国','德国','法国','英国','日本','俄罗斯','印度','澳大利亚','加拿大']
df['life-expectancy...name = '',
x_axis = df['capita-gdp'], # params.values[0]
y_axis = df['life-expectancy..., 53354,36162]
population = [1376048943, 35939927, 1311050527, 143456918, 321773631,126573481]
life_expectancy