I have determined that it fails here in pythonrun.c in function initstdio():
fd = fileno(stdin);
/* Under some conditions stdin, stdout and stderr may not be connected
* and fileno() may point to an invalid file descriptor. For example
* GUI apps don't have valid standard streams by default.
*/
if (!is_valid_fd(fd)) {
std = Py_None;
Py_INCREF(std);
}
else {
std = create_stdio(iomod, fd, 0, "<stdin>", encoding, errors);
if (std == NULL) { << this is true and it proceeds to return an error
and abort
I haven’t determined yet why create_stdio fails, or why fileno(stdin) returns a
valid fd if there is no stdin for the process on Android?
I don’t understand the rationale here: why every process should have a stdin
and why the Python interpreter needs to initialize it (especially on Android
with PyQt.)
One comment in the discussion of Python issue 17797 says a workaround is to
redirect stdio to a file before calling Py_InitializeEx (and thus initstdio() )
Note that issue 17797 has recent comments in the last few days. The thread
says any ‘fix’ for Python (at least in regards Windows VS11 as a culprit) must
wait till Python3.5. The pertinent code in Python seems to have been changed
recently._______________________________________________
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