bpo-38792: Remove IDLE shell calltip before new prompt. (#17150)

Previously, a calltip might be left after SyntaxError, KeyboardInterrupt, or Shell Restart.

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Co-authored-by: Tal Einat <taleinat+github@gmail.com>

Lib/idlelib/NEWS.txt

@@ -3,6 +3,9 @@ Released on 2020-10-05?
 ======================================
 
 
+bpo-38792: Close a shell calltip if a :exc:`KeyboardInterrupt`
+or shell restart occurs.  Patch by Zackery Spytz.
+
 bpo-30780: Add remaining configdialog tests for buttons and
 highlights and keys tabs.
 

Lib/idlelib/calltip.py

@@ -33,7 +33,7 @@ class Calltip:
         # See __init__ for usage
         return calltip_w.CalltipWindow(self.text)
 
-    def _remove_calltip_window(self, event=None):
+    def remove_calltip_window(self, event=None):
         if self.active_calltip:
             self.active_calltip.hidetip()
             self.active_calltip = None
@@ -55,7 +55,7 @@ class Calltip:
             self.open_calltip(False)
 
     def open_calltip(self, evalfuncs):
-        self._remove_calltip_window()
+        self.remove_calltip_window()
 
         hp = HyperParser(self.editwin, "insert")
         sur_paren = hp.get_surrounding_brackets('(')

Lib/idlelib/editor.py

@@ -328,7 +328,7 @@ class EditorWindow(object):
         text.bind("<<run-module>>", scriptbinding.run_module_event)
         text.bind("<<run-custom>>", scriptbinding.run_custom_event)
         text.bind("<<do-rstrip>>", self.Rstrip(self).do_rstrip)
-        ctip = self.Calltip(self)
+        self.ctip = ctip = self.Calltip(self)
         text.bind("<<try-open-calltip>>", ctip.try_open_calltip_event)
         #refresh-calltip must come after paren-closed to work right
         text.bind("<<refresh-calltip>>", ctip.refresh_calltip_event)

Lib/idlelib/pyshell.py

@@ -1292,6 +1292,7 @@ class PyShell(OutputWindow):
             self.text.insert("end-1c", "\n")
         self.text.mark_set("iomark", "end-1c")
         self.set_line_and_column()
+        self.ctip.remove_calltip_window()
 
     def write(self, s, tags=()):
         try:

Misc/NEWS.d/next/IDLE/2019-11-13-23-51-39.bpo-38792.xhTC5a.rst

@@ -0,0 +1,2 @@
+Close an IDLE shell calltip if a :exc:`KeyboardInterrupt`
+or shell restart occurs.  Patch by Zackery Spytz.