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To: python-list@python.org
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject: Re: New user's initial thoughts / criticisms of Python
Date: Sun, 10 Nov 2013 12:12:56 -0500
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Xref: csiph.com comp.lang.python:59017

On Sun, 10 Nov 2013 20:22:56 +1100, Chris Angelico <rosuav@gmail.com>
declaimed the following:

>[1] You can write "(1234).to_bytes(2,'big')" but omitting the parens
>gives a SyntaxError because it looks like the start of a float
>literal.

	Ah, but...

>>> -123.bit_length()
Traceback (  File "<interactive input>", line 1
    -123.bit_length()
                  ^
SyntaxError: invalid syntax
>>> (-123).bit_length()
7
>>> -123 .bit_length()
-7

	No parens needed if a space precedes the .

	But note the order of evaluation is equivalent to

>>> -(123 .bit_length())
-7
>>> 
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/