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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def decode(self, binSequence):
 		"""decodes a binary sequence to return a string"""

		try:
			binSeq = iter(binSequence[0])
		except TypeError, te:
			binSeq = binSequence
    
		ret = ''
		for b in binSeq :
			ch = ''
			for c in self.charToBin :
				if b & self.forma[self.charToBin[c]] > 0 :
					ch += c +'/'
			if ch == '' :
				raise KeyError('Key %d unkowom, bad format' % b)
			
			ret += ch[:-1]
		return ret