code: def pWMWrite(fileHandle, pWM, alphabetSize=4):
      
      for i in xrange(0, alphabetSize):
          fileHandle.write("%s\n" % ' '.join([ str(pWM[j][i]) for j in xrange(0, len(pWM)) ]))
docs: Writes file in standard PWM format, is reverse of pWMParser