hist2.py

import matplotlib.pyplot as plt
from pylab import rand, ylim, xlim
from random import randint
import numpy as np

# random.randint(a, b) # Return a random integer N such that a <= N <= b.

def onGenerate():
  x = randint(0,5)
  y = randint(1, 6-x)
  return  [[x, y, x + y], [y, x, x + y]][randint(0, 1)]

X = []
Y = []
for i in range(100):
  a, b, c = onGenerate()
  X.append(a)
  Y.append(b)


plt.scatter(X,Y, color='r', alpha=0.1)
plt.xlabel("X")
plt.ylabel("Y")
# ylim([-1,6])
# xlim([-1,6])
plt.show()