upstream/ipython Files · IPython/Extensions/ipy_signals.py

Moved the traitlets based config to sandbox (created it)....

Moved the traitlets based config to sandbox (created it). Stefan's prototype new config system that is based on ideas from traits, depended on Python 2.5. We have not done a thorough code review of this code and I don't think we are even using it yet. I have moved all the code from IPython.config to the top-level sandbox. I have begun to remove all references to these modules (just a few imports), but I still need to do lots of testing to make sure there are no lurking problems.

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      """ Advanced signal (e.g. ctrl+C) handling for IPython

      So far, this only ignores ctrl + C in IPython file a subprocess

      is executing, to get closer to how a "proper" shell behaves.

      Other signal processing may be implemented later on.

      If _ip.options.verbose is true, show exit status if nonzero

      """

      import signal,os,sys

      import IPython.ipapi

      import subprocess

      ip = IPython.ipapi.get()

      def new_ipsystem_posix(cmd):

          """ ctrl+c ignoring replacement for system() command in iplib.

          Ignore ctrl + c in IPython process during the command execution. 

          The subprocess will still get the ctrl + c signal.

          posix implementation

          """

          p =  subprocess.Popen(cmd, shell = True)

          old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)

          pid,status = os.waitpid(p.pid,0)

          signal.signal(signal.SIGINT, old_handler)

          if status and ip.options.verbose:

              print "[exit status: %d]" % status

      def new_ipsystem_win32(cmd):    

          """ ctrl+c ignoring replacement for system() command in iplib.

          Ignore ctrl + c in IPython process during the command execution. 

          The subprocess will still get the ctrl + c signal.

          win32 implementation

          """

          old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)

          status = os.system(cmd)

          signal.signal(signal.SIGINT, old_handler)

          if status and ip.options.verbose:

              print "[exit status: %d]" % status

      def init():

          o = ip.options

          try:

              o.verbose

          except AttributeError:

              o.allow_new_attr (True )

              o.verbose = 0

          ip.IP.system = (sys.platform == 'win32' and new_ipsystem_win32 or 

                          new_ipsystem_posix)

      init()

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				""" Advanced signal (e.g. ctrl+C) handling for IPython

				So far, this only ignores ctrl + C in IPython file a subprocess
				is executing, to get closer to how a "proper" shell behaves.

				Other signal processing may be implemented later on.

				If _ip.options.verbose is true, show exit status if nonzero

				"""

				import signal,os,sys
				import IPython.ipapi
				import subprocess

				ip = IPython.ipapi.get()

				def new_ipsystem_posix(cmd):
				""" ctrl+c ignoring replacement for system() command in iplib.

				Ignore ctrl + c in IPython process during the command execution.
				The subprocess will still get the ctrl + c signal.

				posix implementation
				"""

				p = subprocess.Popen(cmd, shell = True)

				old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
				pid,status = os.waitpid(p.pid,0)
				signal.signal(signal.SIGINT, old_handler)
				if status and ip.options.verbose:
				print "[exit status: %d]" % status

				def new_ipsystem_win32(cmd):
				""" ctrl+c ignoring replacement for system() command in iplib.

				Ignore ctrl + c in IPython process during the command execution.
				The subprocess will still get the ctrl + c signal.

				win32 implementation
				"""
				old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
				status = os.system(cmd)
				signal.signal(signal.SIGINT, old_handler)
				if status and ip.options.verbose:
				print "[exit status: %d]" % status


				def init():
				o = ip.options
				try:
				o.verbose
				except AttributeError:
				o.allow_new_attr (True )
				o.verbose = 0

				ip.IP.system = (sys.platform == 'win32' and new_ipsystem_win32 or
				new_ipsystem_posix)

				init()