syntax & rounding fixes

nltk/align/ibm1.py

@@ -34,12 +34,12 @@ class IBMModel1(object):
     >>> aligned_sent = ibm.align(bitexts[6])
     >>> aligned_sent.alignment
     Alignment([(0, 0), (1, 1), (2, 2), (3, 7), (4, 7), (5, 8)])
-    >>> bitexts[6].precision(aligned_sent)
-    0.5555555555555556
-    >>> bitexts[6].recall(aligned_sent)
-    0.8333333333333334
-    >>> bitexts[6].alignment_error_rate(aligned_sent)
-    0.33333333333333337
+    >>> round(bitexts[6].precision(aligned_sent), 3)
+    0.556
+    >>> round(bitexts[6].recall(aligned_sent), 3)
+    0.833
+    >>> round(bitexts[6].alignment_error_rate(aligned_sent), 3)
+    0.333
     
     """
     def __init__(self, align_sents, num_iter):

nltk/align/ibm3.py

@@ -50,11 +50,11 @@ class IBMModel3(object):
 
     >>> ibm3 = IBMModel3(align_sents, 5)
 
-    >>> print "%.1f" % ibm3.probabilities['Buch']['book']
+    >>> round(ibm3.probabilities['Buch']['book'], 1)
     1.0
-    >>> print "%.1f" % ibm3.probabilities['das']['book']
+    >>> round(ibm3.probabilities['das']['book'], 1)
     0.0
-    >>> print "%.1f" % ibm3.probabilities[None]['book']
+    >>> round(ibm3.probabilities[None]['book'], 1)
     0.0
 
     >>> aligned_sent = ibm3.align(align_sents[0])