How to plot a circle in python

import matplotlib.pyplot as plt 

import numpy as np

t  =np.linspace(0,360,500) # t is angle here changing the value of 360 you can control the arc of circle

r = 30  # r is radius

x = r *np.sin(np.radians(t))

y = r*np.cos(np.radians(t))

plt.plot(x,y)

plt.axis('equal')  # if you don't add this line it will make you graph look like ellipse if you add it will look like circle the purpose of this line is to make axis equal on both sides

Making interactive Circle in python 

import matplotlib.pyplot as plt

import numpy as np

from ipywidgets import interactive

def f(r,theta):

    t  =np.linspace(0,theta,500) # t is angle here changing the value of 360 you can control the arc of circle

    r = 30  # r is radius

    x = r *np.sin(np.radians(t))

    y = r*np.cos(np.radians(t))

    plt.plot(x,y)

    plt.axis('equal')

interactive_plots = interactive(f ,r =(0.1,10),theta = (0,360))

interactive_plots

github link

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