upstream/mercurial-mirror Files · mercurial/thirdparty/attr/converters.py

run-tests: partially backout PYTHON quoting...

run-tests: partially backout PYTHON quoting In 7f8b7a060584, I quoted this to support python being installed to "Program Files". Even though the string passed to os.popen() is this: "c:/Python27/python.exe" -c "import mercurial; print (mercurial.__path__[0])" ... cmd.exe is trying to run this: 'c:/Python27/python.exe" -c "import' This caused test-hghave.t to fail, reporting 'unexpected mercurial lib: ""', because the failed execution prints nothing to stdout. Py3 fails as though it's not quoted. For whatever reason, print() shows up in the output when run with py2, but not py3, so I'm having a hard time debugging this. For now, let's fix the buildbot.

Siddharth Agarwal - - Load All Authors

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      """

      Commonly useful converters.

      """

      from __future__ import absolute_import, division, print_function

      def optional(converter):

          """

          A converter that allows an attribute to be optional. An optional attribute

          is one which can be set to ``None``.

          :param callable converter: the converter that is used for non-``None``

              values.

          ..  versionadded:: 17.1.0

          """

          def optional_converter(val):

              if val is None:

                  return None

              return converter(val)

          return optional_converter

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				"""
				Commonly useful converters.
				"""

				from __future__ import absolute_import, division, print_function


				def optional(converter):
				"""
				A converter that allows an attribute to be optional. An optional attribute
				is one which can be set to ``None``.

				:param callable converter: the converter that is used for non-``None``
				values.

				.. versionadded:: 17.1.0
				"""

				def optional_converter(val):
				if val is None:
				return None
				return converter(val)

				return optional_converter