upstream/ipython Files · IPython/core/tests/refbug.py

Display Greek small letter mu (#14426)...

Display Greek small letter mu (#14426) `%time foo()` output is often copied into code comments to explain performance improvements. The `\xb5` Latin Extended micro sign and the `\u03bc` Greek small letter mu have different codes but often look identical. Output mu to align with: * [The International System of Units (SI) brochure]( https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf ), such as Table 7 SI prefixes * NFKC normalized [Python code](https://peps.python.org/pep-3131/ ) and [domain names](https://unicode.org/reports/tr36/). For example: ```sh python -c 'print("""class C: \xb5=1 print(hex(ord(dir(C)[-1])))""")' | tee /dev/fd/2 | python - ``` ```python class C: µ=1 print(hex(ord(dir(C)[-1]))) ``` `0x3bc` * Section 2.5 Duplicated Characters of [Unicode Technical Report 25]( https://www.unicode.org/reports/tr25/) > ...U+03BC μ is the preferred character in a Unicode context. * Ruff confusable mapping [updates]( https://github.com/astral-sh/ruff/pull/4430/files ), currently in the "preview" stage Add a unit test for UTF-8 display and https://bugs.launchpad.net/ipython/+bug/348466 ASCII fallback.

Matthias Bussonnier - - Load All Authors

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      """Minimal script to reproduce our nasty reference counting bug.

      The problem is related to https://github.com/ipython/ipython/issues/141

      The original fix for that appeared to work, but John D. Hunter found a

      matplotlib example which, when run twice in a row, would break.  The problem

      were references held by open figures to internals of Tkinter.

      This code reproduces the problem that John saw, without matplotlib.

      This script is meant to be called by other parts of the test suite that call it

      via %run as if it were executed interactively by the user. As of 2011-05-29,

      test_run.py calls it.

      """

      #-----------------------------------------------------------------------------

      # Module imports

      #-----------------------------------------------------------------------------

      from IPython import get_ipython

      #-----------------------------------------------------------------------------

      # Globals

      #-----------------------------------------------------------------------------

      # This needs to be here because nose and other test runners will import

      # this module. Importing this module has potential side effects that we

      # want to prevent.

      if __name__ == '__main__':

          ip = get_ipython()

          if not '_refbug_cache' in ip.user_ns:

              ip.user_ns['_refbug_cache'] = []

          aglobal = 'Hello'

          def f():

              return aglobal

          cache = ip.user_ns['_refbug_cache']

          cache.append(f)

          def call_f():

              for func in cache:

                  print('lowercased:',func().lower())

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				"""Minimal script to reproduce our nasty reference counting bug.

				The problem is related to https://github.com/ipython/ipython/issues/141

				The original fix for that appeared to work, but John D. Hunter found a
				matplotlib example which, when run twice in a row, would break. The problem
				were references held by open figures to internals of Tkinter.

				This code reproduces the problem that John saw, without matplotlib.

				This script is meant to be called by other parts of the test suite that call it
				via %run as if it were executed interactively by the user. As of 2011-05-29,
				test_run.py calls it.
				"""

				#-----------------------------------------------------------------------------
				# Module imports
				#-----------------------------------------------------------------------------

				from IPython import get_ipython

				#-----------------------------------------------------------------------------
				# Globals
				#-----------------------------------------------------------------------------

				# This needs to be here because nose and other test runners will import
				# this module. Importing this module has potential side effects that we
				# want to prevent.
				if __name__ == '__main__':

				ip = get_ipython()

				if not '_refbug_cache' in ip.user_ns:
				ip.user_ns['_refbug_cache'] = []


				aglobal = 'Hello'
				def f():
				return aglobal

				cache = ip.user_ns['_refbug_cache']
				cache.append(f)

				def call_f():
				for func in cache:
				print('lowercased:',func().lower())