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-rw-r--r--setuptools/command/build_py.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/setuptools/command/build_py.py b/setuptools/command/build_py.py
index 23e8b31c..4ce35314 100644
--- a/setuptools/command/build_py.py
+++ b/setuptools/command/build_py.py
@@ -194,9 +194,9 @@ class build_py(orig.build_py, Mixin2to3):
def exclude_data_files(self, package, src_dir, files):
"""Filter filenames for package's data files in 'src_dir'"""
- globs = (
- self.exclude_package_data.get('', [])
- + self.exclude_package_data.get(package, [])
+ globs = itertools.chain(
+ self.exclude_package_data.get('', []),
+ self.exclude_package_data.get(package, []),
)
bad = set(
item