diff options
Diffstat (limited to 'numpy/distutils/exec_command.py')
| -rw-r--r-- | numpy/distutils/exec_command.py | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/numpy/distutils/exec_command.py b/numpy/distutils/exec_command.py index 9707f360d..c6635b6e0 100644 --- a/numpy/distutils/exec_command.py +++ b/numpy/distutils/exec_command.py @@ -141,6 +141,19 @@ def _update_environment( **env ): for name,value in env.items(): os.environ[name] = value or '' +def _supports_fileno(stream): + """ + Returns True if 'stream' supports the file descriptor and allows fileno(). + """ + if hasattr(stream, 'fileno'): + try: + r = stream.fileno() + return True + except IOError: + return False + else: + return False + def exec_command( command, execute_in='', use_shell=None, use_tee = None, _with_python = 1, @@ -195,7 +208,7 @@ def exec_command( command, # _exec_command_posix uses os.system and is faster # but not on all platforms os.system will return # a correct status. - if _with_python and hasattr(sys.stdout, 'fileno') and \ + if _with_python and _supports_fileno(sys.stdout) and \ sys.stdout.fileno() == -1: st = _exec_command_python(command, exec_command_dir = exec_dir, @@ -350,7 +363,7 @@ def _exec_command( command, use_shell=None, use_tee = None, **env ): argv = [os.environ['COMSPEC'],'/C'] + argv using_command = 1 - _has_fileno = hasattr(sys.stdout, 'fileno') + _has_fileno = _supports_fileno(sys.stdout) if _has_fileno: so_fileno = sys.stdout.fileno() se_fileno = sys.stderr.fileno() |