Use the module docstring as the package description.

Workaround missing imported packages in some cases (like pre-commit) so
the module can still be imported.

check_s3_bucket/__init__.py

@@ -15,16 +15,13 @@ try:
     import botocore.session
     import botocore.exceptions
 except ImportError:
-    print("Failed to import botocore.")
-    sys.exit(3)
+    pass
 try:
     import pytz
 except ImportError:
-    print("Failed to import pytz.")
-    sys.exit(3)
+    pass
 
 __version__ = "0.2.6"
-NOW = datetime.datetime.now(pytz.utc)
 
 
 def get_file_list(conn, bucket, prefix=""):
@@ -160,4 +157,16 @@ def main():  # noqa: C901
 
 
 if __name__ == "__main__":
+    if "botocore" not in dir():
+        print(
+            "Failed to import botocore, is the package installed?",
+            file=sys.stderr,
+        )
+        sys.exit(3)
+    if "pytz" not in dir():
+        print(
+            "Failed to import pytz, is the package installed?", file=sys.stderr
+        )
+        sys.exit(3)
+    NOW = datetime.datetime.now(pytz.utc)
     main()

setup.py

 #!/usr/bin/env python
 # pylint: disable=missing-docstring
 from setuptools import setup, find_packages
+from check_s3_bucket import __doc__ as description
 
 setup(
     name="check_s3_bucket",
     version="0.2.6",
-    description="""Check that a file was added to an S3 bucket in the given
-    time window and is of a reasonable size.""",
+    description=description,
     long_description=open("README.rst", "r").read(),
     url="https://git.shore.co.il/nimrod/check_s3_bucket",
     author="Nimrod Adar",