Use PtyProcessError instead of ExceptionPexpect

ptyprocess/_fork_pty.py

@@ -4,6 +4,7 @@
 import errno
 
 from pty import (STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO, CHILD)
+from .util import PtyProcessError
 
 def fork_pty():
     '''This implements a substitute for the forkpty system call. This
@@ -63,7 +64,7 @@ def pty_make_controlling_tty(tty_fd):
     try:
         fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
         os.close(fd)
-        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
+        raise PtyProcessError("OSError of errno.ENXIO should be raised.")
     except OSError as err:
         if err.errno != errno.ENXIO:
             raise
@@ -74,4 +75,4 @@ def pty_make_controlling_tty(tty_fd):
 
     # Verify we now have a controlling tty.
     fd = os.open("/dev/tty", os.O_WRONLY)
-    os.close(fd)
+    os.close(fd)

ptyprocess/ptyprocess.py

@@ -19,7 +19,7 @@
 # Constants
 from pty import (STDIN_FILENO, CHILD)
 
-from .util import which
+from .util import which, PtyProcessError
 
 _platform = sys.platform.lower()
 
@@ -81,9 +81,6 @@ def _make_eof_intr():
     _INTR = _byte(intr)
     _EOF = _byte(eof)
 
-class PtyProcessError(Exception):
-    """Generic error class for this package."""
-
 # setecho and setwinsize are pulled out here because on some platforms, we need
 # to do this from the child before we exec()
 

ptyprocess/util.py

@@ -64,4 +64,8 @@ def _access_check(fn, mode):
                     name = os.path.join(dir, thefile)
                     if _access_check(name, mode):
                         return name
-        return None
+        return None
+
+
+class PtyProcessError(Exception):
+    """Generic error class for this package."""