code: def get_fasta_record(fasta_file, transcript_name):
      
      with open_pysam_file(fname=fasta_file, ftype='fasta') as f:
          sequence = f.fetch(transcript_name)
      return {transcript_name: sequence}
docs: Return a single transcript from a valid fasta file as a record.
  
      record[transcript_name] = sequence
  
      Keyword arguments:
      fasta_file -- FASTA format file of the transcriptome
      transcript_name -- Name of the transcript as in the FASTA header