Applescript; opening an app in Space number N

In OS X 10.5 or 10.6, Spaces assignments can be accessed and changed via the scriptable interface to System Events.app:

tell application "System Events"
    set x to application bindings of spaces preferences of expose preferences
    set x to {|com.apple.textedit|:4} & x  -- Have TextEdit appear in space 4
    set application bindings of spaces preferences of expose preferences to x
end tell

If you don’t already know it, you can get the bundle id of an application from the Finder:

tell application "Finder"
    get id of application file "TextEdit" of folder "Applications" of startup disk
end tell

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