John Nagle <na...@animats.com> writes: > Python 3 enforces the rule that you can't mix tabs and spaces > for indentation in the same file. That (finally) guarantees that > the indentation you see is what the Python parser sees. That's > enough to prevent non-visible indentation errors.
Are you sure? It seems to restrict them in the same block, but not in the entire file. At least I was able to use both space and tab indented blocks in the same file with Python 3.0 and 3.1. I suspect precluding any mixture at all at the file level would be more intrusive, for example, when trying to combine multiple code sources in a single file. Not that this really changes your final point, since the major risk of a mismatch between the parser vs. visual display is within a single block. > It also means that the Python parser no longer has to have > any concept of how many spaces equal a tab. So the problem > is now essentially solved. "has to have" being a future possibility at this point, since I'm fairly sure the 3.x parser does technically still have the concept of a tab size of 8, though now it can be an internal implementation detail. -- David -- http://mail.python.org/mailman/listinfo/python-list
