added docstring to median fn

stats.py

@@ -11,8 +11,15 @@ def mean(vals):
     return total/length
 
 def median(vals):
-    """please implement this function"""
-    return 1
+    """This calculates the median from a list of values"""
+    vals.sort()
+    z = len(vals)
+    index = z / 2
+    if z % 2 == 0:
+       return mean([vals[index], vals[index - 1]])
+    else:
+       return vals[index]
+
 
 def mode(vals):
     """Computes the mode from a list of values."""

test_stats.py

@@ -1,7 +1,7 @@
 from nose.tools import assert_equal, assert_almost_equal, assert_true, \
     assert_false, assert_raises, assert_is_instance
 
-from stats import mean, mode, std, var#, median
+from stats import mean, mode, std, var, median
 
 def test_mean1():
     obs = mean([0, 0, 0, 0])
@@ -26,6 +26,12 @@ def test_floating_mean1():
     assert_equal(obs, exp)
 
 # FIXME Put Median tests here
+# I added some test that I hope work! - JYS
+
+def test_floating_median():
+    obs = median([1, 2, 3])
+    exp = 2
+    assert_equal(obs, exp)
 
 # FIXME Put Mode tests here