remove most uses of list(somedict.keys()) in Demo scripts

Demo/scripts/ftpstats.py

@@ -106,9 +106,7 @@ def showbar(dict, title):
     n = len(title)
     print('='*((70-n)/2), title, '='*((71-n)/2))
     list = []
-    keys = list(dict.keys())
-    keys.sort()
-    for key in keys:
+    for key in sorted(dict.keys()):
         n = len(str(key))
         list.append((len(dict[key]), key))
     maxkeylength = 0
@@ -128,8 +126,7 @@ def show(dict, title, maxitems):
     n = len(title)
     print('='*((70-n)/2), title, '='*((71-n)/2))
     list = []
-    keys = list(dict.keys())
-    for key in keys:
+    for key in dict.keys():
         list.append((-len(dict[key]), key))
     list.sort()
     for count, key in list[:maxitems]:

Demo/scripts/markov.py

@@ -87,7 +87,7 @@ def test():
         return
     if debug: print('done.')
     if debug > 1:
-        for key in list(m.trans.keys()):
+        for key in m.trans.keys():
             if key is None or len(key) < histsize:
                 print(repr(key), m.trans[key])
         if histsize == 0: print(repr(''), m.trans[''])

Demo/scripts/newslist.py

@@ -172,10 +172,9 @@ def printtree(f, tree, indent, p):
         createpage(p[1:], tree, p)
         return
 
-    kl = list(tree.keys())
+    kl = sorted(tree.keys())
 
     if l > 1:
-        kl.sort()
         if indent > 0:
             # Create a sub-list
             f.write('<LI>'+p[1:]+'\n<UL>')