Changing the open with settings in 10.10.1

I am looking for a way to edit the open with settings in 10.10.1, i have looked through older questions and have attempted to rename the launch services plist and have gotten no where.

I have looked through the

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister

and my

/Users/J/Library/Preferences/com.apple.LaunchServices/com.apple.launchservices.secure.plist

and I was able to remove text edit from random extensions but i am still unable to remove numbers or find its assoisation to .py files in a

/lsregister -dump

Here is a picture to clarify, i would like to remove numbers.app and pages.app along with xcode.app as options to open up files with a .py extension.

Sidenote: Another related feature is i would like to add an application in that menu for every single file type in my system. For example i would like to be able to open every file in my system with hexfiend and textedit.

right clicking/adding every time i have a new file type is a pain because my applications folder is filled with a few apps that are folders that get searched recursively when i look through it

Update: solution directly from apple -- Uninstall numbers. Other then uninstalling the application, it is not possible to remove applications from this list published by apple... any other publisher and it is possible lol.......