def sequence(self, line_data, child_type=None, reference=None):
        """
        Get the sequence of line_data, according to the columns 'seqid', 'start', 'end', 'strand'.
        Requires fasta reference.
        When used on 'mRNA' type line_data, child_type can be used to specify which kind of sequence to return:
        * child_type=None:  pre-mRNA, returns the sequence of line_data from start to end, reverse complement according to strand. (default)
        * child_type='exon':  mature mRNA, concatenates the sequences of children type 'exon'.
        * child_type='CDS':  coding sequence, concatenates the sequences of children type 'CDS'. Use the helper
                             function translate(seq) on the returned value to obtain the protein sequence.

        :param line_data: line_data(dict) with line_data['line_index'] or line_index(int)
        :param child_type: None or feature type(string)
        :param reference: If None, will use self.fasta_external or self.fasta_embedded(dict)
        :return: sequence(string)
        """
        # get start node
        reference = reference or self.fasta_external or self.fasta_embedded
        if not reference:
            raise Exception('External or embedded fasta reference needed')
        try:
            line_index = line_data['line_index']
        except TypeError:
            line_index = self.lines[line_data]['line_index']
        ld = self.lines[line_index]
        if ld['type'] != 'feature':
            return None
        seq = reference[ld['seqid']][ld['start']-1:ld['end']]
        if ld['strand'] == '-':
            seq = complement(seq[::-1])
        return seq
def sequence(self, line_data, child_type=None, reference=None):
        """
        Get the sequence of line_data, according to the columns 'seqid', 'start', 'end', 'strand'.
        Requires fasta reference.
        When used on 'mRNA' type line_data, child_type can be used to specify which kind of sequence to return:
        * child_type=None:  pre-mRNA, returns the sequence of line_data from start to end, reverse complement according to strand. (default)
        * child_type='exon':  mature mRNA, concatenates the sequences of children type 'exon'.
        * child_type='CDS':  coding sequence, concatenates the sequences of children type 'CDS'. Use the helper
                             function translate(seq) on the returned value to obtain the protein sequence.

        :param line_data: line_data(dict) with line_data['line_index'] or line_index(int)
        :param child_type: None or feature type(string)
        :param reference: If None, will use self.fasta_external or self.fasta_embedded(dict)
        :return: sequence(string)
        """
        # get start node
        reference = reference or self.fasta_external or self.fasta_embedded
        if not reference:
            raise Exception('External or embedded fasta reference needed')
        try:
            line_index = line_data['line_index']
        except TypeError:
            line_index = self.lines[line_data]['line_index']
        ld = self.lines[line_index]
        if ld['type'] != 'feature':
            return None
        seq = reference[ld['seqid']][ld['start']-1:ld['end']]
        if ld['strand'] == '-':
            seq = complement(seq[::-1])
        return seq
def sequence ( self , line_data , child_type = None , reference = None ) : # get start node reference = reference or self . fasta_external or self . fasta_embedded if not reference : raise Exception ( 'External or embedded fasta reference needed' ) try : line_index = line_data [ 'line_index' ] except TypeError : line_index = self . lines [ line_data ] [ 'line_index' ] ld = self . lines [ line_index ] if ld [ 'type' ] != 'feature' : return None seq = reference [ ld [ 'seqid' ] ] [ ld [ 'start' ] - 1 : ld [ 'end' ] ] if ld [ 'strand' ] == '-' : seq = complement ( seq [ : : - 1 ] ) return seq
Get the sequence of line_data, according to the columns 'seqid', 'start', 'end', 'strand'.
        Requires fasta reference.
        When used on 'mRNA' type line_data, child_type can be used to specify which kind of sequence to return:
        * child_type=None:  pre-mRNA, returns the sequence of line_data from start to end, reverse complement according to strand. (default)
        * child_type='exon':  mature mRNA, concatenates the sequences of children type 'exon'.
        * child_type='CDS':  coding sequence, concatenates the sequences of children type 'CDS'. Use the helper
                             function translate(seq) on the returned value to obtain the protein sequence.

        :param line_data: line_data(dict) with line_data['line_index'] or line_index(int)
        :param child_type: None or feature type(string)
        :param reference: If None, will use self.fasta_external or self.fasta_embedded(dict)
        :return: sequence(string)
Get the sequence of line_data according to the columns seqid start end strand . Requires fasta reference . When used on mRNA type line_data child_type can be used to specify which kind of sequence to return : * child_type = None : pre - mRNA returns the sequence of line_data from start to end reverse complement according to strand . ( default ) * child_type = exon : mature mRNA concatenates the sequences of children type exon . * child_type = CDS : coding sequence concatenates the sequences of children type CDS . Use the helper function translate ( seq ) on the returned value to obtain the protein sequence .