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Matplotlib.pyplot.waitforbuttonpress() in Python

  • Last Updated : 10 May, 2020

Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. Pyplot is a state-based interface to a Matplotlib module which provides a MATLAB-like interface. There are various plots which can be used in Pyplot are Line Plot, Contour, Histogram, Scatter, 3D Plot, etc.

matplotlib.pyplot.waitforbuttonpress() method

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The waitforbuttonpress() method in pyplot module of matplotlib library is used for blocking call to interact with the figure.

Syntax: matplotlib.pyplot.waitforbuttonpress(timeout=- 1)



Parameters: This method accept the following parameters that are discussed below:

  • timeout: This parameter is the timeout value.

Returns: This method does not returns any value.

Below examples illustrate the matplotlib.pyplot.waitforbuttonpress() function in matplotlib.pyplot:

Example 1:




# Implementation of matplotlib function 
import numpy as np 
import matplotlib.pyplot as plt 
  
  
for ite in range(2): 
    x = np.linspace(-2, 6, 100
    y = (ite + 1)*
  
    fig = plt.figure() 
      
    ax = fig.subplots() 
    ax.plot(x, y, '-b'
  
    fig.suptitle("""matplotlib.pyplot.waitforbuttonpress()
function Example\n\n""", fontweight ="bold") 
  
    w = plt.waitforbuttonpress() 
    print("Result after", ite, "click", w) 
  
    plt.show() 

Output:

Example 2:




# Implementation of matplotlib function 
import numpy as np 
import matplotlib.cm as cm 
import matplotlib.mlab as mlab 
import matplotlib.pyplot as plt 
    
  
fig = plt.figure() 
ax = fig.subplots() 
    
def tellme(s): 
        
    fig.suptitle(s, fontweight ="bold"
    fig.canvas.draw() 
    renderer = fig.canvas.renderer 
    fig.draw(renderer) 
    
plt.clf() 
ax.axis([-1., 1., -1., 1.]) 
  
plt.setp(plt.gca(), autoscale_on = False
    
tellme("""matplotlib.pyplot.waitforbuttonpress()
function Example\n\n"""
    
w = plt.waitforbuttonpress() 
print("Result after click :", w) 
  
plt.show() 

Output:




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