python plt线条设置

Sure, I can help you with that. To set the properties of a line in matplotlib using Python, you can use the following code:

import matplotlib.pyplot as plt 

# x and y data for the line
x = [1, 2, 3, 4, 5]
y = [2, 4, 6, 8, 10]

# set the properties of the line
plt.plot(x, y, linestyle='--', linewidth=2, color='r')

# show the plot
plt.show()

In this example, `linestyle` is set to a dashed line (`--`), `linewidth` is set to 2, and the color of the line is red (`'r'`). You can modify these properties to get the desired result.