Add a SubprocessError base class for exceptions in the subprocess module.
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index c8af5d1..874aea7 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -191,8 +191,10 @@
A ValueError will be raised if Popen is called with invalid arguments.
-check_call() and check_output() will raise CalledProcessError, if the
-called process returns a non-zero return code.
+Exceptions defined within this module inherit from SubprocessError.
+check_call() and check_output() will raise CalledProcessError if the
+called process returns a non-zero return code. TimeoutExpired
+be raised if a timeout was specified and expired.
Security
@@ -348,7 +350,10 @@
import warnings
# Exception classes used by this module.
-class CalledProcessError(Exception):
+class SubprocessError(Exception): pass
+
+
+class CalledProcessError(SubprocessError):
"""This exception is raised when a process run by check_call() or
check_output() returns a non-zero exit status.
The exit status will be stored in the returncode attribute;
@@ -362,7 +367,7 @@
return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
-class TimeoutExpired(Exception):
+class TimeoutExpired(SubprocessError):
"""This exception is raised when the timeout expires while waiting for a
child process.
"""