Python-сообщество

class sequence: #sequence
    def __init__(self):
        self.seq = ''
        self.tag = ''
        self.hash_of_sequence = {} 

    def read_sequence_from_lines(self, Line): # read sequence into a hash tag /sequence object
        if Line.startswith('>'):
	    self.tag = Line
	    self.sequence = Line.next()
            return self.hash_of_sequences[self.tag] = self.sequence
        else:
	    pass
        
    def read_file_hash(self, filename): #readfile as lines
        f = open(filename, "r")
        for Line in f.readlines():
            self.read_sequence_from_lines(Line)    
        f.close()

>>> import al
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "al.py", line 61
    return self.hash_of_sequences[self.tag] = self.sequence

self.hash_of_sequences[self.tag] = self.sequence

sequence.read_file_hash(sys.argv[1])

my_sequence = sequence()
my_sequence.read_file_hash(sys.argv[1])