In my editor (notepad++) in Python script edit mode, a line
## is this a special comment or what?
Turns a different color (yellow) than a normal #comment.
What's special about a ##comment vs a #comment?
From the Python point of view, there's no difference. However, Notepad++'s highlighter considers the ## sequence as a STRINGEOL, which is why it colours it this way. See this thread .
I thought the difference had something to do with usage:
#this is a code block header
vs.
##this is a comment
I know Python doesn't care one way or the other, but I thought it was just convention to do it that way.
Also, in a different situations :
Comment whose first line is a double hash:
This is used by doxygen and Fredrik Lundh's PythonDoc. In doxygen, if there's text on the line with the double hash, it is treated as a summary string. I dislike this convention because it seems too likely to result in false positives. Eg, if you comment-out a region with a comment in it, you get a double-hash.
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