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

Changing input filtering to require whitespace separation between the initial command (alias, magic, autocall) and rest of line. ...

Changing input filtering to require whitespace separation between the initial command (alias, magic, autocall) and rest of line. This fixes some subtle but nasty bugs with lines that start with, e.g. r'a_string'. They had been getting parsed as the magic %r followed by the string literal 'a_string' -- now that's been fixed.

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             clearcmd.py
        
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      # -*- coding: utf-8 -*-

      """ IPython extension: add %clear magic """

      import IPython.ipapi

      import gc

      ip = IPython.ipapi.get()

      def clear_f(self,arg):

          """ Clear various data (e.g. stored history data)

          %clear out - clear output history

          %clear in  - clear input history

          """

          api = self.getapi()

          for target in arg.split():

              if target == 'out':

                  print "Flushing output cache (%d entries)" % len(api.user_ns['_oh'])

                  self.outputcache.flush()

              elif target == 'in':

                  print "Flushing input history"

                  from IPython import iplib

                  del self.input_hist[:]

                  del self.input_hist_raw[:]

                  for n in range(1,self.outputcache.prompt_count + 1):

                      key = '_i'+`n`

                      try:

                          del self.user_ns[key]

                      except: pass

              elif target == 'array':

                  try:

                      pylab=ip.IP.pylab

                      for x in self.user_ns.keys():

                          if isinstance(self.user_ns[x],pylab.arraytype):

                              del self.user_ns[x]

                  except AttributeError:

                      print "Clear array only available in -pylab mode"

                  gc.collect()                

      ip.expose_magic("clear",clear_f)

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				# -- coding: utf-8 --
				""" IPython extension: add %clear magic """

				import IPython.ipapi
				import gc
				ip = IPython.ipapi.get()


				def clear_f(self,arg):
				""" Clear various data (e.g. stored history data)

				%clear out - clear output history
				%clear in - clear input history
				"""

				api = self.getapi()
				for target in arg.split():
				if target == 'out':
				print "Flushing output cache (%d entries)" % len(api.user_ns['_oh'])
				self.outputcache.flush()
				elif target == 'in':
				print "Flushing input history"
				from IPython import iplib
				del self.input_hist[:]
				del self.input_hist_raw[:]
				for n in range(1,self.outputcache.prompt_count + 1):
				key = '_i'+`n`
				try:
				del self.user_ns[key]
				except: pass
				elif target == 'array':
				try:
				pylab=ip.IP.pylab
				for x in self.user_ns.keys():
				if isinstance(self.user_ns[x],pylab.arraytype):
				del self.user_ns[x]
				except AttributeError:
				print "Clear array only available in -pylab mode"
				gc.collect()


				ip.expose_magic("clear",clear_f)