old_contents: #!/usr/bin/env python
  # coding:utf-8
  import os
  import argparse
  
  
  header_msg = {
      'py': '#!/usr/bin/env python\n# coding:utf-8\n',
      'c': '#include <stdio.h>\n',
      'scm': ';;;\n',
      'm': ''
  }
  
  
  def par():
      parser = argparse.ArgumentParser(
          description='A script for add script header message'
      )
      parser.add_argument('newfile')
      args = parser.parse_args()
      return args
  
  
  def file_exists(file_path):
      return True if os.path.exists(file_path) else False
  
  
  def main(args):
      file_path = os.getcwd() + '/' + args.newfile
      if file_exists(file_path):
          print('\t{0} already exists...'.format(args.newfile))
      else:
          newfile_attrs = args.newfile.split('.')
          with open(args.newfile, 'w') as f:
              if (len(newfile_attrs) == 2) and (newfile_attrs[-1] in header_msg):
                  f.write(header_msg[newfile_attrs[-1]])
  
  if __name__ == '__main__':
      args = par()
      main(args)
  
new_contents: #!/usr/bin/env python
  # coding:utf-8
  
  import os
  import argparse
  
  
  header_msg = {
      'py': '#!/usr/bin/env python\n# coding:utf-8\n',
      'c': '#include <stdio.h>\n',
      'scm': ';;;\n',
      'm': ''
  }
  
  
  def par():
      parser = argparse.ArgumentParser(
          description='A script for add script header message'
      )
      parser.add_argument('newfile')
      args = parser.parse_args()
      return args
  
  
  def file_exists(file_path):
      return True if os.path.exists(file_path) else False
  
  
  def main(args):
      file_path = os.getcwd() + '/' + args.newfile
      if file_exists(file_path):
          print('\t{0} already exists...'.format(args.newfile))
      else:
          newfile_attrs = args.newfile.split('.')
          with open(args.newfile, 'w') as f:
              if (len(newfile_attrs) == 2) and (newfile_attrs[-1] in header_msg):
                  f.write(header_msg[newfile_attrs[-1]])
  
  if __name__ == '__main__':
      args = par()
      main(args)
  
subject: fix atouch.py