How does Python draw the diagram of cos and sin?

In python's own editor IDLE, create a new script, such as drawing. py。

Import the required modules.

Import numpy as np.

Import scipy as sp.

Import pylab as pl.

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input code

x=np.linspace(0，4*np.pi， 100)

pl.plot(x，pl.sin(x))

pl.show()

three

Execute the code and press F5 to display the picture directly.

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Some precautions:

1. Method Linspace (0,4 * np.pi, 100) refers to generating 100 points from 0 to 4*pi.

2. Method plot is a drawing function, which is equivalent to plot(x, y), where x is the abscissa and y is the ordinate.

3.show () is used to show.

Hope to adopt! !