diff options
Diffstat (limited to 'setuptools/command/test.py')
| -rw-r--r-- | setuptools/command/test.py | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/setuptools/command/test.py b/setuptools/command/test.py index dde0118c..997fd8b0 100644 --- a/setuptools/command/test.py +++ b/setuptools/command/test.py @@ -186,11 +186,12 @@ class test(Command): orig_pythonpath = os.environ.get('PYTHONPATH', nothing) current_pythonpath = os.environ.get('PYTHONPATH', '') try: - prefix = os.pathsep.join(paths) - to_join = filter(None, [prefix, current_pythonpath]) - new_path = os.pathsep.join(to_join) - if new_path: - os.environ['PYTHONPATH'] = new_path + to_join = [] + for x in list(paths) + current_pythonpath.split(os.pathsep): + if x not in to_join: + to_join.append(x) + if to_join: + os.environ['PYTHONPATH'] = os.pathsep.join(to_join) yield finally: if orig_pythonpath is nothing: |