Is "#!/usr/bin/env python" the better shebang line ?

[Timothy Madden]

Hello

Sorry if this has been discussed before, my search did not find it.
My questions is if I should use
   #!/usr/bin/env python
as the shebang line in a portable and open python script and if it does 
help with portability and usage.

First, can one not find /usr/bin/python in any standard system, at least 
as much as /usr/bin/env can be found ?

Then, supposing /usr/bin/env is better than /usr/bin/python and I use 
it, is it not the case that many editors and code analysing programs, 
that want to know the script language for syntax highlighting, code 
completion, tags and source code browsing, etc, will loose their 
functionality because of this shebang line ? Is this not a good general 
reason to use the old one ?

Now I know env is POSIX standard utility, and python is not, and maybe 
that could be reason enough, but are there any other issues involved 
with using /usr/bin/env ?

Thank you
Timothy Madden