为什么我的代码将Matplotlib中的图形向右移动了许多单元？

import matplotlib.pyplot as plt

# 示例数据
x = [1, 2, 3, 4, 5]
y = [10, 15, 7, 12, 9]

plt.plot(x, y)
plt.xlim(min(x), max(x))  # 确保x轴范围覆盖所有数据点
plt.show()

import matplotlib.pyplot as plt

# 示例数据
x = [0, 1, 2, 3, 4]  # 确保x轴数据从0开始
y = [10, 15, 7, 12, 9]

plt.plot(x, y)
plt.show()

import matplotlib.pyplot as plt

# 示例数据
x = [1, 2, 3, 4, 5]
y = [10, 15, 7, 12, 9]

plt.plot(x, y)
plt.autoscale_view(True, True, True)  # 控制自动缩放
plt.show()

import matplotlib.pyplot as plt

# 示例数据
x = [1, 2, 3, 4, 5]
y = [10, 15, 7, 12, 9]

fig, ax = plt.subplots()
ax.plot(x, y)
plt.subplots_adjust(left=0.1, right=0.9, bottom=0.1, top=0.9)  # 调整子图位置
plt.show()