parameters: (self, key, value)
docstring: Stores a value associated with a key.
docstring_summary: Stores a value associated with a key.
docstring_tokens: Stores a value associated with a key .
function: def push_key(self, key, value):
          """Stores a value associated with a key."""
          self.keys[key] = value
function_tokens: def push_key ( self , key , value ) : self . keys [ key ] = value