What is true about the unbind_all () method?
(Select two answers.)

• A.It can be invoked from any widget
• B.It can be invoked from the main window widget only
• C.It is parameterless
• D.It causes all the widgets to disappear

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Look at the following examples of comments and docstrings in Python. Select the ones that are useful and compliant with PEP 8 recommendations. (Select the two best answers.)

• A.def net_expense(q, price):
  """Return the total cost of items before tax."""
  return q * price
• B.n = n - 1 # Decrement n by 1.
• C.val = val + 1.15 # Compensate for diminished value.
• D.def total_cost(q):
  '''Takes the q argument and multiplies it by 1.15.'''
  return q * 1.15

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What is true about the unbind () method? (Select two answers.)

• A.It is invoked from within the events object
• B.It is invoked from within a widget's object
• C.It needs a widget's object as an argument
• D.It needs the event name as an argument

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Which of the following values can be returnedby the messagebox. askquestion () method?

• A."accept:" and "cancel''
• B.l and o
• C."yes" and "no"
• D.True and False

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Look at the following examples of comments and docstrings in PythonSelect the ones that are useful and compliant with PEP 8 recommendations (Select the two best answers.) A)

• A.
• B.
• C.
• D.

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