[DISCUSSION] Py3k simple

ocrolib/common.py

@@ -493,7 +493,7 @@ def unpickle_find_global(mname,cname):
     if mname=="lstm.lstm":
         from . import lstm
         return getattr(lstm,cname)
-    if not mname in sys.modules.keys():
+    if not mname in sys.modules:
         exec("import "+mname)
     return getattr(sys.modules[mname],cname)
 

ocrolib/extras/lru.py

@@ -125,7 +125,7 @@ def wrapper(*args, **kwds):
                 # purge least frequently used cache entry
                 if len(cache) > maxsize:
                     for key, _ in nsmallest(maxsize // 10,
-                                            use_count.iteritems(),
+                                            iter(use_count.items()),
                                             key=itemgetter(1)):
                         del cache[key], use_count[key]
 

ocrolib/lattice.py

@@ -65,7 +65,7 @@ def lastState(self):
     def classes(self):
         edges = chain.from_iterable(self.edges.values())
         classes = set([e.cls for e in edges])
-        return sorted(list(classes))
+        return sorted(classes)
 
 class Lattice2:
     """Like Lattice, but handles whitespace by multi-char classes"""
@@ -114,4 +114,4 @@ def lastState(self):
     def classes(self):
         edges = chain.from_iterable(self.edges.values())
         classes = set([e.cls for e in edges])
-        return sorted(list(classes))
+        return sorted(classes)

ocrolib/ngraphs.py

@@ -116,7 +116,7 @@ def buildFromFiles(self,fnames,n):
     def computePosteriors(self,counter):
         """Given a `counter` of all n-graphs, compute
         (log) conditional probabilities."""
-        self.N = len(counter.items()[0][0])
+        self.N = len(list(counter.items())[0][0])
         ngrams = defaultdict(list)
         for k,v in counter.items():
             ngrams[k[:-1]].append((k,v))

ocrolib/toplevel.py

@@ -56,7 +56,7 @@ def wrapper(*args,**kw):
             global _trace1_depth
             _trace1_depth += 1
             print(" " * _trace1_depth, "ENTER", name, ":", end=' ')
-            for k,v in zip(argnames,args)+kw.items():
+            for k,v in zip(argnames,args)+list(kw.items()):
                 print("%s=%s" % (k, strc(v)), end=' ')
             print()
             result = f(*args,**kw)