pyparsing dependency issues #21506
Description
A fresh install of Beam gives
AttributeError: module 'pyparsing' has no attribute 'downcaseTokens'
when trying to import apache beam. This seems to be from a transitive dependency using deprecated methods, but we may need to pin pyparsing or upgrade the dependency.
Imported from Jira BEAM-14092. Original Jira may contain additional context.
Reported by: robertwb.