parameters: (self,dist)
return_statement: return self.by_key.get(dist.key) == dist
docstring: True if `dist` is the active distribution for its project
docstring_summary: True if `dist` is the active distribution for its project
docstring_tokens: True if dist is the active distribution for its project
function: def __contains__(self,dist):
          """True if `dist` is the active distribution for its project"""
          return self.by_key.get(dist.key) == dist
function_tokens: def __contains__ ( self , dist ) : return self . by_key . get ( dist . key ) == dist