Issue #18316: Update idlelib 2.7 except clauses to ease backports.

Lib/idlelib/EditorWindow.py

@@ -689,7 +689,7 @@ class EditorWindow(object):
         # XXX Ought to insert current file's directory in front of path
         try:
             (f, file, (suffix, mode, type)) = _find_module(name)
-        except (NameError, ImportError), msg:
+        except (NameError, ImportError) as msg:
             tkMessageBox.showerror("Import error", str(msg), parent=self.text)
             return
         if type != imp.PY_SOURCE:

Lib/idlelib/GrepDialog.py

@@ -98,7 +98,7 @@ class GrepDialog(SearchDialogBase):
     def findfiles(self, dir, base, rec):
         try:
             names = os.listdir(dir or os.curdir)
-        except os.error, msg:
+        except os.error as msg:
             print msg
             return []
         list = []

Lib/idlelib/IOBinding.py

@@ -251,7 +251,7 @@ class IOBinding:
             f = open(filename,'rb')
             chars = f.read()
             f.close()
-        except IOError, msg:
+        except IOError as msg:
             tkMessageBox.showerror("I/O Error", str(msg), master=self.text)
             return False
 
@@ -294,7 +294,7 @@ class IOBinding:
         # Next look for coding specification
         try:
             enc = coding_spec(chars)
-        except LookupError, name:
+        except LookupError as name:
             tkMessageBox.showerror(
                 title="Error loading the file",
                 message="The encoding '%s' is not known to this Python "\
@@ -388,7 +388,7 @@ class IOBinding:
             f.flush()
             f.close()
             return True
-        except IOError, msg:
+        except IOError as msg:
             tkMessageBox.showerror("I/O Error", str(msg),
                                    master=self.text)
             return False
@@ -408,7 +408,7 @@ class IOBinding:
         try:
             enc = coding_spec(chars)
             failed = None
-        except LookupError, msg:
+        except LookupError as msg:
             failed = msg
             enc = None
         if enc:

Lib/idlelib/PyShell.py

@@ -430,7 +430,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
             try:
                 self.rpcclt = MyRPCClient(addr)
                 break
-            except socket.error, err:
+            except socket.error as err:
                 pass
         else:
             self.display_port_binding_error()
@@ -451,7 +451,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
         self.rpcclt.listening_sock.settimeout(10)
         try:
             self.rpcclt.accept()
-        except socket.timeout, err:
+        except socket.timeout as err:
             self.display_no_subprocess_error()
             return None
         self.rpcclt.register("console", self.tkconsole)
@@ -486,7 +486,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
         self.spawn_subprocess()
         try:
             self.rpcclt.accept()
-        except socket.timeout, err:
+        except socket.timeout as err:
             self.display_no_subprocess_error()
             return None
         self.transfer_path(with_cwd=with_cwd)
@@ -1458,7 +1458,7 @@ def main():
     startup = False
     try:
         opts, args = getopt.getopt(sys.argv[1:], "c:deihnr:st:")
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stderr.write("Error: %s\n" % str(msg))
         sys.stderr.write(usage_msg)
         sys.exit(2)

Lib/idlelib/ScriptBinding.py

@@ -70,13 +70,13 @@ class ScriptBinding:
         f = open(filename, 'r')
         try:
             tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
-        except tokenize.TokenError, msg:
+        except tokenize.TokenError as msg:
             msgtxt, (lineno, start) = msg
             self.editwin.gotoline(lineno)
             self.errorbox("Tabnanny Tokenizing Error",
                           "Token Error: %s" % msgtxt)
             return False
-        except tabnanny.NannyNag, nag:
+        except tabnanny.NannyNag as nag:
             # The error messages from tabnanny are too confusing...
             self.editwin.gotoline(nag.get_lineno())
             self.errorbox("Tab/space error", indent_message)
@@ -101,7 +101,7 @@ class ScriptBinding:
             try:
                 # If successful, return the compiled code
                 return compile(source, filename, "exec")
-            except (SyntaxError, OverflowError, ValueError), err:
+            except (SyntaxError, OverflowError, ValueError) as err:
                 try:
                     msg, (errorfilename, lineno, offset, line) = err
                     if not errorfilename:

Lib/idlelib/SearchEngine.py

@@ -66,7 +66,7 @@ class SearchEngine:
             flags = flags | re.IGNORECASE
         try:
             prog = re.compile(pat, flags)
-        except re.error, what:
+        except re.error as what:
             try:
                 msg, col = what
             except:

Lib/idlelib/run.py

@@ -140,7 +140,7 @@ def manage_socket(address):
         try:
             server = MyRPCServer(address, MyHandler)
             break
-        except socket.error, err:
+        except socket.error as err:
             print>>sys.__stderr__,"IDLE Subprocess: socket error: "\
                                         + err.args[1] + ", retrying...."
     else: