homepage

With the following package directory structure--
foo/
 __init__.py
 __main__.py
 from foo import bar
 bar.py
 print('***')
 raise ImportError('test...')
Running--
$ ./python.exe -m foo
Yields--
***
Traceback (most recent call last):
 File ".../python/cpython/cpython/Lib/runpy.py", line 162, in _run_module_as_main
 "__main__", fname, loader, pkg_name)
 File ".../python/cpython/cpython/Lib/runpy.py", line 75, in _run_code
 exec(code, run_globals)
 File "./foo/__main__.py", line 1, in <module>
 from foo import bar
ImportError: cannot import name bar
$
The exception text gets swallowed.
Changing the relative import "from foo import bar" to "import foo.bar" does show the exception text.