Удалил Untitled.ipynb

src-numpy/random_walk_numpy.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+
+import numpy as np
+
+nsteps = 1000
+draws = np.random.randint(0, 2, size=nsteps)
+steps = np.where(draws > 0, 1, -1)
+walk = steps.cumsum()

src-numpy/random_walk_pure.py

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+# -*- coding: utf-8 -*-
+
+import matplotlib.pyplot as plt
+import random
+
+position = 0
+walk = [position]
+steps = 1000
+for i in range(100):
+    step = 1 if random.randint(0, 1) else -1
+    position += step
+    walk.append(position)
+
+plt.plot(walk[:100])
+plt.savefig('numpy-3.png')
+
+