New submission from Matthew Tanous :
Ran into this on macOS while trying to play around with the new posix_spawn
bindings. It appears to me that the file_actions path is not what is being used
by file_actions here. It may be that I am misunderstanding something, but I
thought I would bring
New submission from Matthew Tanous :
Allowing posix_spawn file_actions to default to None works, but explicitly
setting it throws a TypeError:
Python 3.8.0a3 (v3.8.0a3:9a448855b5, Mar 25 2019, 17:05:20)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", &
Matthew Tanous added the comment:
I have some updated information. This works as expected when I set the
permissions properly using an octal number 0o777.
The issue appears to be that when the permissions don't exist as specified, the
PermissionError reports the process name, not the
Matthew Tanous added the comment:
Your example is an attempt to use Popen to run a file you don't have execute
permissions for.
In my example, it is not `whoami` that it is failing to create/open, but
'.tmp/temp_file'. I would expect a `PermissionError: [Errno 13] Permission
Matthew Tanous added the comment:
It makes sense, except for this case is not true when "x" is an immutable data
type - it appears as though something like [5] * n creates a list of totally
separate elements (even if they start as the same thing).
It is difficult to see a case whe
New submission from Matthew Tanous:
If I produce a list in this fashion:
l = [[x] * n] * n
I would expect that I would obtain a matrix-like structure. Instead, I get a
list of the *same* list, such that the statement:
l[x][y] = z
would change, in essence, every value in "column"
Matthew Tanous added the comment:
I'm aware that it's how Python works at present. My point was that this is
awkward and counter-intuitive, with no purpose I can see worth serving.
"That's just how it works" seems to me a rather insufficient answer, especially
for
