[issue28385] Bytes objects should reject all formatting codes with an error message

[Ned Deily]

Ned Deily added the comment:

Buildbots are failing:

======================================================================
FAIL: test_errors (test.test_fstring.TestCase) (str="f'{(lambda: 0):x}'")
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TypeError: unsupported format string passed to function.__format__

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/buildarea/3.6.angelico-debian-amd64/build/Lib/test/test_fstring.py", line 20, in assertAllRaise
    eval(str)
AssertionError: "non-empty" does not match "unsupported format string passed to function.__format__"

======================================================================
FAIL: test_errors (test.test_fstring.TestCase) (str="f'{(0,):x}'")
----------------------------------------------------------------------
TypeError: unsupported format string passed to tuple.__format__

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/buildarea/3.6.angelico-debian-amd64/build/Lib/test/test_fstring.py", line 20, in assertAllRaise
    eval(str)
AssertionError: "non-empty" does not match "unsupported format string passed to tuple.__format__"

----------------------------------------------------------------------
Ran 48 tests in 1.389s

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nosy: +ned.deily

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28385>
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