在matplotlib条形图中沿x轴添加额外空间

import matplotlib.pyplot as plt
import numpy as np

x = np.array(['A', 'B', 'C', 'D', 'E'])
y = np.array([10, 20, 15, 25, 30])

plt.bar(x, y)

plt.xlim(-0.5, len(x)-0.5)

plt.xticks(range(len(x)), x)

plt.show()

import matplotlib.pyplot as plt
import numpy as np

x = np.array(['A', 'B', 'C', 'D', 'E'])
y = np.array([10, 20, 15, 25, 30])

plt.bar(x, y)
plt.xlim(-0.5, len(x)-0.5)
plt.xticks(range(len(x)), x)
plt.show()