1. Drawing 3D charts using mplot3d1.1 Mplot3d overview1234567import matplotlib.pyplot as pltfrom mpl_toolkits.mplot3d import Axes3Dfig = plt.figure()ax = Axes3D(fig)plt.show() 123456import matplotlib

1. Install the extension nbextensions Install: pip install jupyter_contrib_nbextensions -i https://pypi.mirrors.ustc.edu.cn/simple Activation: jupyter contrib nbextension install --user nbextensio

1. Axis overview1234import matplotlib.pyplot as pltcur_ax = plt.gca()print(cur_ax.spines) Note: Does not display properly 2. Add an axis to any location12345678910import matplotlib.pyplot as plt# plt.

1. Draw subgraphs of fixed areas 1.1 Draw single subgraphUsing the subplot() function of the pyplot module, you can draw a single subgraph in a planned area. 1234567891011import matplotlib.pyplot as p

1. Overview of chart styles1.1 Default chart styles123import matplotlibprint(matplotlib.rc_params()) Common configuration items Configuration items Instructions The default value lines.color Li

1. Classifying with distance measurementsk-Nearest Neighbors (kNN) is one of the simplest yet most effective machine learning algorithms used for classification and regression tasks. As a non-parametr

1. The auxiliary elements commonly used in chartsCommon auxiliary elements include following: Coordinate axis: The single coordinate axis can be divided into horizontal coordinate axis (X axis) and v

Forewordpycharm’s start button is on the left, you want to move it to the right Step View -> Appearance -> Toolbar

1. Draw line chart12345678910import matplotlib.pyplot as pltimport numpy as npx1 = np.arange(1, 10)y1 = x1y2 = x1 ** 2plt.plot(x1, y1)plt.plot(x1, y2)plt.show() 1234567import matplotlib.pyplot as pl

1. ‘u’ means UnicodeThe ‘u’ in front of a string means the string is a Unicode string. 12hello_rus = u"Привет, мир"hello_rus In Python 2.x, a Unicode string is marked with ‘u’. However, in P