Issue2294

$ mkdir /tmp/ćśź
$ touch /tmp/ćśź/{a,b}.py
$ cat test.py
# coding: utf-8
import sys
sys.path.append("/tmp/ćśź")
print("sys.path[-1]: %r" % sys.path[-1])
import a
print(a)
sys.path[-1] = u"/tmp/ćśź"
print("sys.path[-1]: %r" % sys.path[-1])
import b
print(b)
$ python2.7 test.py
sys.path[-1]: '/tmp/\xc4\x87\xc5\x9b\xc5\xba'
<module 'a' from '/tmp/ćśź/a.py'>
sys.path[-1]: u'/tmp/\u0107\u015b\u017a'
<module 'b' from '/tmp/ćśź/b.py'>
$ jython2.7 test.py
sys.path[-1]: '/tmp/\xc4\x87\xc5\x9b\xc5\xba'
Traceback (most recent call last):
  File "test.py", line 5, in <module>
    import a
ImportError: No module named a

In Jython 2.7.2a1, this now works:

PS iss2294> jython test.py
sys.path[-1]: '\xc4\x87\xc5\x9b\xc5\xba'
<module 'a' from '膰艣藕\a.py'>
sys.path[-1]: u'\u0107\u015b\u017a'
<module 'b' from '膰艣藕\b.py'>

Or nearly works, apart from the encoding of the directory name for console output. See also #2295.

Interestingly, CPython 2.7.14 fails on my Windows machine:

PS iss2294> python test.py
sys.path[-1]: '\xc4\x87\xc5\x9b\xc5\xba'
Traceback (most recent call last):
  File "test.py", line 8, in <module>
    import a
ImportError: No module named a

This is because the first path actually consists of utf-8 bytes (source encoding) while the FS-encoding is ms936.

Given the previous comment, I think this should not still be open.