-

cool-RR · cool-RR · commit 4f03be50aeb7 · 2013-08-17T02:16:51.000+03:00
diff --git a/README.markdown b/README.markdown
@@ -23,6 +23,8 @@ GitHub: https://github.com/cool-RR/python_toolbox
 
 CI server: https://jenkins.shiningpanda.com/python-toolbox/job/python_toolbox/
 
+The Python Toolbox is released under the MIT license.
+
 # Not backward-compatible yet #
 
 Please keep in mind that Python Toolbox is still in alpha stage, and that backward compatibility would *not* be maintained in this phase. 
diff --git a/python_toolbox/math_tools.py b/python_toolbox/math_tools.py
@@ -58,4 +58,23 @@ def convert_to_base_in_tuple(number, base):
         
     return tuple(reversed(work_in_progress))
   
-  
+  
+def get_median(iterable):
+    sorted_values = sorted(iterable)
+
+    if len(iterable) % 2 == 0:
+        higher_midpoint = len(iterable) // 2
+        lower_midpoint = higher_midpoint - 1
+        return (sorted_values[lower_midpoint] +
+                sorted_values[higher_midpoint]) / 2
+    else:
+        midpoint = len(iterable) // 2
+        return sorted_values[midpoint]
+    
+    
+def get_mean(iterable):
+    sum_ = 0
+    for i, value in enumerate(iterable):
+        sum_ += value
+    return sum_ / (i + 1)
+        
diff --git a/test_python_toolbox/test_math_tools/test_get_mean.py b/test_python_toolbox/test_math_tools/test_get_mean.py
@@ -0,0 +1,19 @@
+# Copyright 2009-2013 Ram Rachum.
+# This program is distributed under the MIT license.
+
+from __future__ import with_statement
+
+import sys
+
+import nose
+
+from python_toolbox.math_tools import get_mean
+
+
+def test_mean():
+    assert get_mean((1, 2, 3)) == 2
+    assert get_mean((1, 2, 3, 4)) == 2.5
+    assert get_mean((1, 2, 3, 4, 5)) == 3
+    assert get_mean((-1, -2, -3, -4, -5)) == -3
+    assert get_mean((-0.5, -2, -3, -4, -5.5)) == -3
+    assert 1821.666 < get_mean((1000, 10000.5, -2, -4, -14, -50.5)) < 1821.667
diff --git a/test_python_toolbox/test_math_tools/test_get_median.py b/test_python_toolbox/test_math_tools/test_get_median.py
@@ -0,0 +1,22 @@
+# Copyright 2009-2013 Ram Rachum.
+# This program is distributed under the MIT license.
+
+from __future__ import with_statement
+
+import sys
+
+import nose
+
+from python_toolbox.math_tools import get_median
+
+
+def test_median():
+    assert get_median((1, 2, 3)) == 2
+    assert get_median((1, 2, 3, 4)) == 2.5
+    assert get_median((1, 2, 3, 4, 5)) == 3
+    assert get_median((-1, -2, -3, -4, -5)) == -3
+    assert get_median((-0.5, -2, -3, -4, -5.5)) == -3
+    assert get_median((-0.5, -2, -3, -4, -50.5)) == -3
+    assert get_median((10000.5, -2, -3, -14, -50.5)) == -3
+    assert get_median((10000.5, -2, -4, -14, -50.5)) == -4
+    assert get_median((1000, 1000, 10000.5, -2, -4, -14, -50.5)) == -2
