Merge pull request #12 from gfreynoso/patch-1

Nice contribution! I added the third digit probability.

benfordslaw/benfordslaw.py

@@ -55,7 +55,11 @@ def __init__(self, alpha=0.05, method='chi2', pos=1, verbose=3):
         elif np.abs(pos)==2:
             self.leading_digits = [12, 11.4, 10.9, 10.4, 10, 9.7, 9.3, 9, 8.8, 8.5]
             self.digit_range = range(0, 10)
-        elif (np.abs(pos)>2) or (np.abs(pos)==0):
+        elif np.abs(pos)==3:
+            self.leading_digits = [10.2, 10.1,	10.1, 10.1,	10.0, 10.0,	9.9, 9.9, 9.9, 9.8]
+            self.digit_range = range(0, 10) 
+
+        elif (np.abs(pos)>3) or (np.abs(pos)==0):
             raise Exception('[benfordslaw] >There is no leading digit distribution specified for this digit!')
 
     def fit(self, X):