Refactor: move no_rerun from test_import and datetimetester to test.support

Feature or enhancement

It is defined here:

cpython/Lib/test/test_import/__init__.py

Lines 123 to 139 in b407ad3

    
           def no_rerun(reason): 
        
               """Skip rerunning for a particular test. 
        
               WARNING: Use this decorator with care; skipping rerunning makes it 
        
               impossible to find reference leaks. Provide a clear reason for skipping the 
        
               test using the 'reason' parameter. 
        
               """ 
        
               def deco(func): 
        
                   _has_run = False 
        
                   def wrapper(self): 
        
                       nonlocal _has_run 
        
                       if _has_run: 
        
                           self.skipTest(reason) 
        
                       func(self) 
        
                       _has_run = True 
        
                   return wrapper 
        
               return deco

and here:

cpython/Lib/test/datetimetester.py

Lines 50 to 68 in b407ad3

    
           # This is copied from test_import/__init__.py. 
        
           # XXX Move it to support/__init__.py. 
        
           def no_rerun(reason): 
        
               """Skip rerunning for a particular test. 
        
               WARNING: Use this decorator with care; skipping rerunning makes it 
        
               impossible to find reference leaks. Provide a clear reason for skipping the 
        
               test using the 'reason' parameter. 
        
               """ 
        
               def deco(func): 
        
                   _has_run = False 
        
                   def wrapper(self): 
        
                       nonlocal _has_run 
        
                       if _has_run: 
        
                           self.skipTest(reason) 
        
                       func(self) 
        
                       _has_run = True 
        
                   return wrapper 
        
               return deco

Introduced in #119373

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Refactor: move `no_rerun` from `test_import` and `datetimetester` to `test.support` #119659

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	def no_rerun(reason):
	"""Skip rerunning for a particular test.

	WARNING: Use this decorator with care; skipping rerunning makes it
	impossible to find reference leaks. Provide a clear reason for skipping the
	test using the 'reason' parameter.
	"""
	def deco(func):
	_has_run = False
	def wrapper(self):
	nonlocal _has_run
	if _has_run:
	self.skipTest(reason)
	func(self)
	_has_run = True
	return wrapper
	return deco

	# This is copied from test_import/__init__.py.
	# XXX Move it to support/__init__.py.
	def no_rerun(reason):
	"""Skip rerunning for a particular test.

	WARNING: Use this decorator with care; skipping rerunning makes it
	impossible to find reference leaks. Provide a clear reason for skipping the
	test using the 'reason' parameter.
	"""
	def deco(func):
	_has_run = False
	def wrapper(self):
	nonlocal _has_run
	if _has_run:
	self.skipTest(reason)
	func(self)
	_has_run = True
	return wrapper
	return deco

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Refactor: move no_rerun from test_import and datetimetester to test.support #119659

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Refactor: move `no_rerun` from `test_import` and `datetimetester` to `test.support` #119659