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Call Tips are floating windows which display function, class, and method
parameter and docstring information when you type an opening parenthesis, and
which disappear when you type a closing parenthesis.
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r2 d } n X| rR | j d d | f i � S| j | � } t | � Sd S( sR Return the argument list and docstring of a function or class
If there is a Python subprocess, get the calltip there. Otherwise,
either fetch_tip() is running in the subprocess itself or it was called
in an IDLE EditorWindow before any script had been run.
The subprocess environment is that of the most recently run script. If
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Delete 'self' parameter for classes (.__init__) and bound methods.
The next lines are the first lines of the doc string up to the first
empty line or _MAX_LINES. For builtins, this typically includes
the arguments in addition to the return value.
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