upstream/ipython Files · IPython/quarantine/ext_rescapture.py

Robustness fixes in test suite machinery....

Robustness fixes in test suite machinery. Added a module-level INSTALLED flag, which can be set to false if the test suite is being run in-place (without ipython having been installed at all). This is because how we call and import things must be done differently depending on whether the code is installed or is being run in-place. The only ones that can know this reliably are the entry-point scripts, so those are responsible for setting this flag. Also made the code that validates ipython in subprocesses report errors better, by checking stderr for errors before validating stdout output, as anything on stderr will be likely informative of the real problem.

Brian Granger - - Load All Authors

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      # -*- coding: utf-8 -*-

      """ IPython extension: new prefilters for output grabbing 

      Provides 

      var = %magic blah blah

      var = !ls

      """

      from IPython.core import ipapi

      from IPython.core.error import TryNext

      from IPython.utils.genutils import *

      ip = ipapi.get()

      import re

      def hnd_magic(line,mo):

          """ Handle a = %mymagic blah blah """

          var = mo.group('varname')

          cmd = mo.group('cmd')

          expr = make_quoted_expr(cmd)

          return itpl('$var = get_ipython().magic($expr)')

      def hnd_syscmd(line,mo):

          """ Handle a = !ls """

          var = mo.group('varname')

          cmd = mo.group('cmd')

          expr = make_quoted_expr(itpl("sc -l =$cmd"))

          return itpl('$var = get_ipython().magic($expr)')

      def install_re_handler(pat, hnd):

          ip.meta.re_prefilters.append((re.compile(pat), hnd))

      def init_handlers():

          ip.meta.re_prefilters = []

          install_re_handler('(?P<varname>[\w\.]+)\s*=\s*%(?P<cmd>.*)',

                             hnd_magic

                             )

          install_re_handler('(?P<varname>[\w\.]+)\s*=\s*!(?P<cmd>.*)',

                             hnd_syscmd

                             )

      init_handlers()

      def regex_prefilter_f(self,line):

          for pat, handler in ip.meta.re_prefilters:

              mo = pat.match(line)

              if mo:

                  return handler(line,mo)

          raise TryNext

      ip.set_hook('input_prefilter', regex_prefilter_f)

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				# -- coding: utf-8 --
				""" IPython extension: new prefilters for output grabbing

				Provides

				var = %magic blah blah

				var = !ls
				"""

				from IPython.core import ipapi
				from IPython.core.error import TryNext
				from IPython.utils.genutils import *

				ip = ipapi.get()

				import re

				def hnd_magic(line,mo):
				""" Handle a = %mymagic blah blah """
				var = mo.group('varname')
				cmd = mo.group('cmd')
				expr = make_quoted_expr(cmd)
				return itpl('$var = get_ipython().magic($expr)')

				def hnd_syscmd(line,mo):
				""" Handle a = !ls """
				var = mo.group('varname')
				cmd = mo.group('cmd')
				expr = make_quoted_expr(itpl("sc -l =$cmd"))
				return itpl('$var = get_ipython().magic($expr)')

				def install_re_handler(pat, hnd):
				ip.meta.re_prefilters.append((re.compile(pat), hnd))

				def init_handlers():

				ip.meta.re_prefilters = []

				install_re_handler('(?P<varname>[\w\.]+)\s=\s%(?P<cmd>.*)',
				hnd_magic
				)

				install_re_handler('(?P<varname>[\w\.]+)\s=\s!(?P<cmd>.*)',
				hnd_syscmd
				)

				init_handlers()

				def regex_prefilter_f(self,line):
				for pat, handler in ip.meta.re_prefilters:
				mo = pat.match(line)
				if mo:
				return handler(line,mo)

				raise TryNext

				ip.set_hook('input_prefilter', regex_prefilter_f)