如何设置matplotlib图表比例，使其不会随着线的增长而改变？

import matplotlib.pyplot as plt
fig, ax = plt.subplots()

x = [1, 2, 3, 4, 5]
y = [2, 4, 6, 8, 10]
line = ax.plot(x, y)
x_min, x_max = min(x), max(x)
y_min, y_max = min(y), max(y)

ax.axis([x_min, x_max, y_min, y_max])

import matplotlib.pyplot as plt

# 创建图表对象
fig, ax = plt.subplots()

# 绘制线条并获取数据范围
x = [1, 2, 3, 4, 5]
y = [2, 4, 6, 8, 10]
line = ax.plot(x, y)
x_min, x_max = min(x), max(x)
y_min, y_max = min(y), max(y)

# 设置坐标轴范围
ax.axis([x_min, x_max, y_min, y_max])

# 显示图表
plt.show()