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+# -*- coding: utf-8 -*-
+# This is the game life http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
+
+import os, time, random
+
+#
+# we need a function to load cells in the neighborhood
+#
+
+def LoadCells(rows, cols):
+    grid = []
+    col = [0] * cols
+    # first we load an empty grid
+    for i in range(rows):
+        col = [0] * cols
+        grid.append(col)
+    # then we load some cells
+    for x in range(rows):
+        for y in range(cols):
+            cell = random.randint(0, random.randint(0, 1))
+            grid[x][y] = cell
+    return grid
+
+#
+# here we draw the grid
+#
+
+def DrawGrid(grid):
+    rows = len(grid)
+    cols = len(grid[1])
+    for x in range(rows):
+        for y in range(cols):
+                if grid[x][y] != 1:
+                    print ".",
+                else:
+                    print "o",
+        print "\n",
+
+#
+# count neighbors arround a single cell
+#
+
+def CountNeighbors(grid, x, y):
+    neighbors = 0
+    rows = len(grid)
+    cols = len(grid[1])
+
+    if x < rows-1 and grid[x+1][y] == 1:
+        neighbors += 1
+    if x > 0 and grid[x-1][y] == 1:
+        neighbors += 1
+    if y < cols-1 and grid[x][y+1] == 1:
+        neighbors += 1
+    if y > 0 and grid[x][y-1] == 1:
+        neighbors += 1
+    if x < rows-1 and y < cols-1 and grid[x+1][y+1] == 1:
+        neighbors += 1
+    if x > 0 and y > 0  and grid[x-1][y-1] == 1:
+        neighbors += 1
+    if x > 0 and y < cols-1 and grid[x-1][y+1] == 1:
+        neighbors += 1
+    if x < rows-1 and y > 0 and grid[x+1][y-1] == 1:
+        neighbors += 1
+
+    return neighbors
+
+# here we define a single iteration
+# if we have between 3 and 6 neighbors the single cell lives
+# in other case the cell dies
+
+def Iteration(grid):
+    rows = len(grid)
+    cols = len(grid[1])
+    neighbors = 0
+    for x in range(rows):
+        for y in range(cols):
+            neighbors = CountNeighbors(grid, x, y)
+            if grid[x][y] == 1:
+                if neighbors < 2 or neighbors > 3:
+                    grid[x][y] = 0
+            else:
+                if neighbors == 3:
+                    grid[x][y] = 1
+
+#
+# iterate n pulses and draws the result of each one
+#
+
+def Iterator(rows, cols, pulses):
+    pulse = 1
+    grid = LoadCells(rows, cols)
+    while pulse <= pulses:
+        os.system('clear')
+        print "Pulse: ", pulse
+        Iteration(grid)
+        DrawGrid(grid)
+        pulse += 1
+        time.sleep(0.2)
+
+number = input("Please input the number of rows and cols (unique number):")
+pulses = input("Please input the number of pulses:")
+Iterator(number, number, pulses)