python - Indentation error : unexpected error -


i new python , have written code in notepad++. have used spaces instead of tab , guess have used correct indentation format. still thie error. dont understand doing wrong. here code,

#!/usr/bin/python  import sys import shutil import sys  def usage() :   print "labelfile transcriptionfile phonemefile"  def main(argv = none) :   if len(sys.argv) !=3 :     usage()   else :     labelfile = sys.argv[1]     transcriptionfile = sys.argv[2]     phonemefile = sys.argv[3]     if (os.path.exists(labelfile)) :       infile = open(labelfile, "r")       tfile = open(transcriptionfile, "w")       pfile = open(phonemefile, "w")         line in iter(infile) :           list = line.split()           tlist = list.pop(3)            plist = list[2]           tfile.write(" ".join(list) + "\n")            pfile.write("".join(list) + " ")           infile.close()         tfile.close()         pfile.close()  if __name__ == "__main__" :   sys.exit(main())  

please help. thank much.

there indentation in front of

for line in iter(infile) : 

reduce indentation line , following 8 lines, , should set.


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