$ ./python.exe -Om unittest test.test_dis    

.....F...F..F....s.................................s.................................................
======================================================================
FAIL: test_info (test.test_dis.BytecodeTests.test_info)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/.../dev/cpython/Lib/test/test_dis.py", line 1623, in test_info
    self.assertRegex(b.info(), expected)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Regex didn't match: 'Name:              code_info\nFilename:          (.*)\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        \\d+\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: None\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x' not found in "Name:              code_info\nFilename:          /Users/.../dev/cpython/Lib/dis.py\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        5\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: 'Formatted details of methods, functions, or code.'\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x"

======================================================================
FAIL: test_code_info (test.test_dis.CodeInfoTests.test_code_info)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/.../dev/cpython/Lib/test/test_dis.py", line 1212, in test_code_info
    self.assertRegex(dis.code_info(x), expected)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Regex didn't match: 'Name:              code_info\nFilename:          (.*)\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        \\d+\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: None\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x' not found in "Name:              code_info\nFilename:          /Users/.../dev/cpython/Lib/dis.py\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        5\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: 'Formatted details of methods, functions, or code.'\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x"

======================================================================
FAIL: test_show_code (test.test_dis.CodeInfoTests.test_show_code)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/.../dev/cpython/Lib/test/test_dis.py", line 1219, in test_show_code
    self.assertRegex(output.getvalue(), expected+"\n")
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Regex didn't match: 'Name:              code_info\nFilename:          (.*)\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        \\d+\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: None\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x\n' not found in "Name:              code_info\nFilename:          /Users/.../dev/cpython/Lib/dis.py\nArgument count:    1\nPositional-only arguments: 0\nKw-only arguments: 0\nNumber of locals:  1\nStack size:        5\nFlags:             OPTIMIZED, NEWLOCALS\nConstants:\n   0: 'Formatted details of methods, functions, or code.'\nNames:\n   0: _format_code_info\n   1: _get_code_object\nVariable names:\n   0: x\n"

----------------------------------------------------------------------
Ran 101 tests in 0.618s

FAILED (failures=3, skipped=2)

./python.exe -Om unittest test.test_dis

.................s.................................s.................................................
----------------------------------------------------------------------
Ran 101 tests in 0.624s

OK (skipped=2)