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def Bio::NeuralNetwork::Gene::Schema::Schema::all_unambiguous (   self  ) 

Return a listing of all unambiguous letters allowed in motifs.

Definition at line 139 of file Schema.py.

00139                              :
        """Return a listing of all unambiguous letters allowed in motifs.
        """
        all_letters = self._ambiguity_info.keys()
        all_letters.sort()

        unambig_letters = []

        for letter in all_letters:
            possible_matches = self._ambiguity_info[letter]
            if len(possible_matches) == 1:
                unambig_letters.append(letter)

        return unambig_letters

# --- helper classes and functions for the default SchemaFinder

# -- Alphabets

class SchemaDNAAlphabet(Alphabet.Alphabet):


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