Fixed missing tzdata module. #1693

libs/tzdata/__init__.py

@@ -0,0 +1,6 @@
+# IANA versions like 2020a are not valid PEP 440 identifiers; the recommended
+# way to translate the version is to use YYYY.n where `n` is a 0-based index.
+__version__ = "2021.5"
+
+# This exposes the original IANA version number.
+IANA_VERSION = "2021e"