How to plot a figure of contours with Python?

I need to plot some figures of the contours, bars and lines or curves.
can I use Python and how to do these with Python?

You can take a look at matplotlib.pyplot. It has a lot of different plotting types and is also pretty easy to use.
https://matplotlib.org/stable/tutorials/pyplot.html

Bokeh is another option:

Dear Dr. Bryan Van de Ven |

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Thank you very much for kind reply.

I visited websites that you provided, they are very helpful to me indeed ! Thank you again !

Best regards,
Jianmin Jiang.

Dear Dr. Paul DerSchinken, |

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Thank you very much for kind reply.

I visited the website that you provided, It is very helpful to me indeed ! Thank you again !

Best regards,
Jianmin Jiang.