[Tutor] Is there space a between "#!" and "/usr/bin/env python" ?

Steven D'Aprano steve at pearwood.info
Wed May 2 02:27:46 CEST 2012

Alan Gauld wrote:
> On 02/05/12 01:02, Santosh Kumar wrote:
>> Its getting complicated now. Will it effect or not?
>> Give me one word answer with one line description.
> impossible.
> It depends what OS you are on, but you didn't say.
> If its Windows the line makes no difference.

On Windows, the presence or absence of a space will make no difference, 
because it's just a comment.

> If it's Unix it depends on the variety, but usually no space is needed.

As far as I know, on any Unix, Linux or other POSIX system, the presence or 
absence of a space between the #! and the path is irrelevant. I suppose it is 
possible that ancient Unixes from 1970 or something might not like the space, 
but that would surprise me.


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