为了确保只有整数位置才能获得刻度标签，可以使用带有整数的matplotlib.ticker.MultipleLocator作为参数.

In order to make sure only integer locations obtain a ticklabel, you may use a matplotlib.ticker.MultipleLocator with an integer number as argument.

要在轴上格式化数字，可以使用matplotlib.ticker.StrMethodFormatter.

To then format the numbers on the axes, you may use a matplotlib.ticker.StrMethodFormatter.

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.ticker

df = pd.DataFrame({"FISCAL_YEAR" : np.arange(2000,2017),
                   'TOTAL' : np.random.rand(17)})

plt.bar(df['FISCAL_YEAR'],df['TOTAL'],align='center')


locator = matplotlib.ticker.MultipleLocator(2)
plt.gca().xaxis.set_major_locator(locator)
formatter = matplotlib.ticker.StrMethodFormatter("{x:.0f}")
plt.gca().xaxis.set_major_formatter(formatter)
plt.show()