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Issue #16309: Make PYTHONPATH= behavior the same as if PYTHONPATH not set at all.

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Thanks to Armin Rigo and Alexey Kachayev.
This commit is contained in:
Andrew Svetlov 2012-11-03 13:52:58 +02:00
parent 683b46aa8d
commit 69032c81aa
4 changed files with 22 additions and 3 deletions
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17
Lib/test/test_cmd_line.py
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@ -216,6 +216,23 @@ class CmdLineTest(unittest.TestCase):
self.assertIn(path1.encode('ascii'), out)
self.assertIn(path2.encode('ascii'), out)
def test_empty_PYTHONPATH_issue16309(self):
"""On Posix, it is documented that setting PATH to the
empty string is equivalent to not setting PATH at all,
which is an exception to the rule that in a string like
"/bin::/usr/bin" the empty string in the middle gets
interpreted as '.'"""
code = """if 1:
import sys
path = ":".join(sys.path)
path = path.encode("ascii", "backslashreplace")
sys.stdout.buffer.write(path)"""
rc1, out1, err1 = assert_python_ok('-c', code, PYTHONPATH="")
rc2, out2, err2 = assert_python_ok('-c', code)
# regarding to Posix specification, outputs should be equal
# for empty and unset PYTHONPATH
self.assertEquals(out1, out2)
def test_displayhook_unencodable(self):
for encoding in ('ascii', 'latin-1', 'utf-8'):
env = os.environ.copy()