parentheses can be omitted only on calls.

(Contributed by Serhiy Storchaka in :issue:`32012` and :issue:`32023`.)

* When using the ``-m`` switch, the starting directory is now added to sys.path,

rather than the current working directory. Any programs that are checking for

the empty string in :data:`sys.path`, or otherwise relying on the previous

behaviour, will need to be updated accordingly (e.g. by checking for

``os.getcwd()`` in addition to checking for the empty string).

* When using the :option:`-m` switch, the initial working directory is now added

to :data:`sys.path`, rather than an empty string (which dynamically denoted

the current working directory at the time of each import). Any programs that

are checking for the empty string, or otherwise relying on the previous

behaviour, will need to be updated accordingly (e.g. by also checking for

``os.getcwd()`` or ``os.path.dirname(__main__.__file__)``, depending on why

the code was checking for the empty string in the first place).

Changes in the Python API

# Note: the tests only cover _get_revised_path, not _adjust_cli_path itself

def _adjust_cli_sys_path():

"""Ensures current directory is on sys.path, and __main__ directory is not

"""Ensures current directory is on sys.path, and __main__ directory is not.

Exception: __main__ dir is left alone if it's also pydoc's directory.

"""

return pydoc._get_revised_path(given_path, argv0)

def _get_starting_path(self):

# Get a copy of sys.path without the current directory

# Get a copy of sys.path without the current directory.

clean_path = sys.path.copy()

for spelling in self.curdir_spellings:

for __ in range(clean_path.count(spelling)):

Fixed regression when running pydoc with the ``-m`` switch. (The regression

was introduced in 3.7.0b3 by the resolution of bpo-33053)

Fixed regression when running pydoc with the :option:`-m` switch. (The regression

was introduced in 3.7.0b3 by the resolution of :issue:`33053`)

This fix also changed pydoc to add ``os.getcwd()`` to ``sys.path`` when

This fix also changed pydoc to add ``os.getcwd()`` to :data:`sys.path` when

necessary, rather than adding ``"."``.