title: AttributeError: 'module' object has no attribute 'Parser'
body: <p>This is my final.py file.</p>
  
  <pre><code>#!/usr/bin/python
  import sys
  import os
  sys.path.insert(0, './src/')
  import lexRule
  import parser
  import ply.lex as lex
  import ply.yacc as yacc
  import node_file
  import genAssembly as ga
  import getopt
  import pydot
  
  def main(argv):
      to_parse = ''
      try:
          opts, args = getopt.getopt(argv,"o:f:h",["opt=","file=","help"])
      except getopt.GetoptError:
          print 'Usage : ./bin/final.py [options][-f/-h/-o] [string]'
          sys.exit(2)
      parse = parser.Parser()
      optjump = 0
      for opt, arg in opts:
          if opt in ("-o", "--opt"):
              if arg == "1":
                  optjump = 1
          elif opt in ("-f", "--file"):
              tree = parse.parse_file(file(arg))
              t = parser.tac.code
  
              q = []
              if optjump == 1:
                  for x in range(0,len(t)-1):
                      if t[x][0] == "goto" and t[x+1][3] == t[x][3]:
                          q.append(x)
                  for qw in reversed(q):
                      del t[qw]
  
                  parser.tac.code = t
  
              old_target = sys.stdout
              ga.generate()
  
              sys.stdout = open('output.s', 'w')
              ga.generate()
  
              sys.stdout = old_target
  
  
              print("Run ./a.out for execution")
              # os.system("nasm -f elf32 inout.s")
              # os.system("nasm -f elf32 fileio.s")
              os.system("nasm -f elf32 output.s")
              # os.system("nasm -f elf32 val1.s")
              # os.system("nasm -f elf32 next1.s")
              # os.system("nasm -f elf32 append2.s")
              os.system("gcc -m32 output.o ./bin/inout.o ./bin/fileio.o ./bin/val1.o ./bin/next1.o ./bin/append2.o")
  
          elif opt in ("-h", "--help"):
              _file = open("./README.txt")
              content = _file.read()
              print(content)
          else:
              print 'Usage : ./bin/final.py [options][-f/-h/-o] [string]'
              sys.exit(2)
      if not opts:
          print 'Usage : ./bin/final.py [options][-f/-h/-o] [string]'
          sys.exit(2)
  
  if __name__ == "__main__":
      main(sys.argv[1:])
  </code></pre>
  
  <p>when i ran it on cmd this is the error i got.<a href="https://i.stack.imgur.com/SzGLY.png" rel="nofollow noreferrer">error</a>
  I am using python2 and running these commands:
  python bin/final.py -f test/ackermann.java 
  python bin/final.py -o 1 -f test/ackermann.java
  the project i am trying to run is :<a href="https://github.com/abhigarg-iitk/java_compiler" rel="nofollow noreferrer">https://github.com/abhigarg-iitk/java_compiler</a></p>