PY3 fixes and added tests for gluon/admin.py

applications/admin/controllers/debug.py

@@ -1,6 +1,5 @@
 import os
 import sys
-import cStringIO
 import gluon.contrib.shell
 import gluon.dal
 import gluon.html
@@ -122,7 +121,7 @@ def execute():
         output = web_debugger.do_exec(command)
         if output is None:
             output = ""
-    except Exception, e:
+    except Exception as e:
         output = T("Exception %s") % str(e)
     k = len(session['debug_commands:' + app]) - 1
     return '[%i] %s%s\n' % (k + 1, command, output)
@@ -212,7 +211,7 @@ def toggle_breakpoint():
                 ok = True
         else:
             response.flash = T("Unable to determine the line number!")
-    except Exception, e:
+    except Exception as e:
         session.flash = str(e)
     return response.json({'ok': ok, 'lineno': lineno})
 
@@ -233,6 +232,6 @@ def list_breakpoints():
             if filename == bp_filename:
                 breakpoints.append(bp_lineno)
         ok = True
-    except Exception, e:
+    except Exception as e:
         session.flash = str(e)
     return response.json({'ok': ok, 'breakpoints': breakpoints})