capture.py 文件源码

def _save(self):
        in_ = self._options['in_']
        out = self._options['out']
        err = self._options['err']
        mixed = self._options['mixed']
        patchsys = self._options['patchsys']
        if in_:
            try:
                self.in_ = FDCapture(0, tmpfile=None, now=False,
                    patchsys=patchsys)
            except OSError:
                pass
        if out:
            tmpfile = None
            if hasattr(out, 'write'):
                tmpfile = out
            try:
                self.out = FDCapture(1, tmpfile=tmpfile,
                           now=False, patchsys=patchsys)
                self._options['out'] = self.out.tmpfile
            except OSError:
                pass
        if err:
            if out and mixed:
                tmpfile = self.out.tmpfile
            elif hasattr(err, 'write'):
                tmpfile = err
            else:
                tmpfile = None
            try:
                self.err = FDCapture(2, tmpfile=tmpfile,
                           now=False, patchsys=patchsys)
                self._options['err'] = self.err.tmpfile
            except OSError:
                pass