[Python-ideas] Multi-line comment blocks. (original) (raw)
Guido van Rossum guido at python.org
Fri Jun 15 18:43:35 CEST 2012
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Let's not try to design a syntax for multi-line comments. There are already enough ways to emulate them. Designing a new syntax based on # plus some special character is doomed for backwards compatibility (never mind the clever tricks proposed).
--Guido
On Fri, Jun 15, 2012 at 9:23 AM, David Gates <gatesda at gmail.com> wrote:
I agree that using multi-line strings as literals comes across as an ugly hack, even if it is BDFL-approved.
Your other point is valid, though as far as I can tell it's only an issue when the comment is indented less than it ought to be (and starts with "#:", of course): #: Valid either way. The next line has the #: same level of indentation, so it's not #: counted as part of the block. print('a') # Causes an IndentationError in existing code. #: print('b') def foo(): #: This one would break. print('c') On Fri, Jun 15, 2012 at 8:04 AM, Robert Kern <robert.kern at gmail.com> wrote:
On 6/15/12 11:49 AM, Sven Marnach wrote:
Robert Kern schrieb am Fri, 15. Jun 2012, um 10:50:40 +0100:
Multi-line string literals aren't comments. They are multi-line string literals. Unlike a comment, which does not show up in the compiled bytecode, the Python interpreter actually does something with those string literals. Sometimes people abuse them as ways to poorly emulate block comments, but this is an abuse, not a feature of the language.
Multi-line string literals do not generate code in CPython, and their use as comments has BDFL approval: https://twitter.com/gvanrossum/status/112670605505077248 Well fancy that. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco
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