#!/usr/bin/python3
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
def main():
    #x=np.random.rand(50)
    x=np.random.normal(0,1,1000)
    plt.hist(x, bins=30, edgecolor='black')
    plt.title('Histogram Plot')
    plt.xlabel('Value')
    plt.ylabel('Freq')
    plt.savefig('fig3.png',dpi=300,transparent=True)

if __name__=="__main__":
     main()