code: def generated_passphrase_entropy(self) -> float:
          
          if (
                  self.amount_w is None
                  or self.amount_n is None
                  or not self.wordlist
          ):
              raise ValueError("Can't calculate the passphrase entropy: "
                               "wordlist is empty or amount_n or "
                               "amount_w isn't set")
  
          if self.amount_n == 0 and self.amount_w == 0:
              return 0.0
  
          entropy_n = self.entropy_bits((self.randnum_min, self.randnum_max))
  
          # The entropy for EFF Large Wordlist is ~12.9, no need to calculate
          entropy_w = self._wordlist_entropy_bits \
              if self._wordlist_entropy_bits \
              else self.entropy_bits(self.wordlist)
  
          return calc_passphrase_entropy(
              self.amount_w,
              entropy_w,
              entropy_n,
              self.amount_n
          )
docs: Calculate the entropy of a passphrase that would be generated.