– script settings
on CodaScriptSettings()
return {displayName:”Titlecase”, inContextMenu:”yes”}
end CodaScriptSettings

– actual script
tell application “Coda”

try

tell current split of front document

if selected text is not equal to “” then
set someText to selected text
else
set someText to contents
end if

end tell

on error
beep
return
end try

end tell

set shellscriptString to do shell script “python -c \”print ” & quoted form of (someText) & “.title()\”"

set shellresult to do shell script shellscriptString without altering line endings

tell application “Coda”
try
tell current split of document 1

if selected text is not equal to “” then
set selected text to shellresult

else
set contents to shellresult
end if

end tell

on error
beep

end try
end tell

Thanks!