Merge Py Idle changes:

Rev 1.39 GvR
Properly fix SF bug #507298 (Gregor Lingl): shellpython2.2 -Qnew smart
indent error

Use // where int division is intended.  (This breaks IDLE for use with
previous Python versions -- I don't care.)

Rev 1.40 tim_one
Convert a pile of obvious "yes/no" functions to return bool.

Rev 1.41 foffani/loewis
(already merged)  - MS html help

Rev 1.42
(skip, done differently in Idlefork)

Rev 1.43 tzot/rhettinger
Extended IDLE's open module menu item to handle hierarchical module names.
Will look at doing something similar in import.c so that the effort won't
have to be repeated elsewhere.
Closes SF patch 600152.

Rev 1.44 doerwalter
(string methods)

Lib/idlelib/EditorWindow.py

@@ -19,6 +19,20 @@ import aboutDialog, textView, configDialog
 # The default tab setting for a Text widget, in average-width characters.
 TK_TABWIDTH_DEFAULT = 8
 
+def _find_module(fullname, path=None):
+    """Version of imp.find_module() that handles hierarchical module names"""
+
+    file = None
+    for tgt in fullname.split('.'):
+        if file is not None:
+            file.close()            # close intermediate files
+        (file, filename, descr) = imp.find_module(tgt, path)
+        if descr[2] == imp.PY_SOURCE:
+            break                   # find but not load the source file
+        module = imp.load_module(tgt, file, filename, descr)
+        path = module.__path__
+    return file, filename, descr
+
 class EditorWindow:
     from Percolator import Percolator
     from ColorDelegator import ColorDelegator
@@ -183,7 +197,7 @@ class EditorWindow:
         self.text.after_idle(self.set_line_and_column)
 
     def set_line_and_column(self, event=None):
-        line, column = string.split(self.text.index(INSERT), '.')
+        line, column = self.text.index(INSERT).split('.')
         self.status_bar.set_label('column', 'Col: %s' % column)
         self.status_bar.set_label('line', 'Ln: %s' % line)
 
@@ -346,20 +360,19 @@ class EditorWindow:
         except TclError:
             name = ""
         else:
-            name = string.strip(name)
+            name = name.strip()
         if not name:
             name = tkSimpleDialog.askstring("Module",
                      "Enter the name of a Python module\n"
                      "to search on sys.path and open:",
                      parent=self.text)
             if name:
-                name = string.strip(name)
+                name = name.strip()
             if not name:
                 return
-        # XXX Ought to support package syntax
         # XXX Ought to insert current file's directory in front of path
         try:
-            (f, file, (suffix, mode, type)) = imp.find_module(name)
+            (f, file, (suffix, mode, type)) = _find_module(name)
         except (NameError, ImportError), msg:
             tkMessageBox.showerror("Import error", str(msg), parent=self.text)
             return
@@ -401,17 +414,17 @@ class EditorWindow:
 
     def ispythonsource(self, filename):
         if not filename:
-            return 1
+            return True
         base, ext = os.path.splitext(os.path.basename(filename))
         if os.path.normcase(ext) in (".py", ".pyw"):
-            return 1
+            return True
         try:
             f = open(filename)
             line = f.readline()
             f.close()
         except IOError:
-            return 0
-        return line[:2] == '#!' and string.find(line, 'python') >= 0
+            return False
+        return line.startswith('#!') and 'python' in line
 
     def close_hook(self):
         if self.flist:
@@ -621,7 +634,7 @@ class EditorWindow:
         top, bot = self.getwindowlines()
         lineno = self.getlineno(mark)
         height = bot - top
-        newtop = max(1, lineno - height/2)
+        newtop = max(1, lineno - height//2)
         text.yview(float(newtop))
 
     def getwindowlines(self):
@@ -712,7 +725,7 @@ class EditorWindow:
         if keydefs:
             self.apply_bindings(keydefs)
             for vevent in keydefs.keys():
-                methodname = string.replace(vevent, "-", "_")
+                methodname = vevent.replace("-", "_")
                 while methodname[:1] == '<':
                     methodname = methodname[1:]
                 while methodname[-1:] == '>':
@@ -1300,7 +1313,7 @@ class IndentSearcher:
 def prepstr(s):
     # Helper to extract the underscore from a string, e.g.
     # prepstr("Co_py") returns (2, "Copy").
-    i = string.find(s, '_')
+    i = s.find('_')
     if i >= 0:
         s = s[:i] + s[i+1:]
     return i, s
@@ -1317,7 +1330,7 @@ def get_accelerator(keydefs, event):
     if not keylist:
         return ""
     s = keylist[0]
-    s = re.sub(r"-[a-z]\b", lambda m: string.upper(m.group()), s)
+    s = re.sub(r"-[a-z]\b", lambda m: m.group().upper(), s)
     s = re.sub(r"\b\w+\b", lambda m: keynames.get(m.group(), m.group()), s)
     s = re.sub("Key-", "", s)
     s = re.sub("Cancel","Ctrl-Break",s)   # dscherer@cmu.edu