[docs] [issue20692] Tutorial section 9.4 and FAQ: how to call a method on an int

[Terry J. Reedy]

Terry J. Reedy added the comment:

Replace 'The right way... with
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To look up an attribute on an integer literal, separate the literal from the period with either a space or parentheses.

    >>> 3 .__class__
    <class 'int'>
    >>> (5).__class__
    <type 'int'>

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<http://bugs.python.org/issue20692>
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