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Reintroduce support for Python 2.6 to python_stub_template #11269

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Reintroduce support for Python 2.6 to python_stub_template #11269

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13 changes: 9 additions & 4 deletions src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,6 @@ import shutil
import subprocess
import tempfile
import zipfile
import collections

# Return True if running on Windows
def IsWindows():
Expand Down Expand Up @@ -264,7 +263,11 @@ https://github.com/bazelbuild/bazel/issues/7899 for more information.

def Deduplicate(items):
"""Efficiently filter out duplicates, keeping the first element only."""
return list(collections.OrderedDict((it, None) for it in items).keys())
seen = set()
for it in items:
if it not in seen:
seen.add(it)
yield it

def Main():
args = sys.argv[1:]
Expand All @@ -281,8 +284,10 @@ def Main():
python_path_entries += GetRepositoriesImports(module_space, %import_all%)
# Remove duplicates to avoid overly long PYTHONPATH (#10977). Preserve order,
# keep first occurrence only.
python_path_entries = Deduplicate(python_path_entries)
python_path_entries = [GetWindowsPathWithUNCPrefix(d) for d in python_path_entries]
python_path_entries = [
GetWindowsPathWithUNCPrefix(d)
for d in Deduplicate(python_path_entries)
]

old_python_path = os.environ.get('PYTHONPATH')
python_path = os.pathsep.join(python_path_entries)
Expand Down