text: #!/usr/bin/python
  # Copyright 2010 Google Inc.
  # Licensed under the Apache License, Version 2.0
  # http://www.apache.org/licenses/LICENSE-2.0
  
  # Google's Python Class
  # http://code.google.com/edu/languages/google-python-class/
  
  import sys
  import re
  
  """Baby Names exercise
  
  Define the extract_names() function below and change main()
  to call it.
  
  For writing regex, it's nice to include a copy of the target
  text for inspiration.
  
  Here's what the html looks like in the baby.html files:
  ...
  <h3 align="center">Popularity in 1990</h3>
  ....
  <tr align="right"><td>1</td><td>Michael</td><td>Jessica</td>
  <tr align="right"><td>2</td><td>Christopher</td><td>Ashley</td>
  <tr align="right"><td>3</td><td>Matthew</td><td>Brittany</td>
  ...
  
  Suggested milestones for incremental development:
   -Extract the year and print it
   -Extract the names and rank numbers and just print them
   -Get the names data into a dict and print it
   -Build the [year, 'name rank', ... ] list and print it
   -Fix main() to use the extract_names list
  """
  
  
  
      
  def extract_names(filename):
    """
    Given a file name for baby.html, returns a list starting with the year string
    followed by the name-rank strings in alphabetical order.
    ['2006', 'Aaliyah 91', Aaron 57', 'Abagail 895', ' ...]
    """
    # +++your code here+++
    with open(filename) as f:
          lst=f.read().splitlines()
       
    wholepage=''
    for ls in lst:
       wholepage+='..'+ls    
    yr=re.search(r'Popularity in (\d\d\d\d)',wholepage).group(1)
    if not yr:
          # We didn't find a year, so we'll exit with an error message.
      sys.stderr.write('Couldn\'t find the year!\n')
      sys.exit(1)
    names=[]
    names.append(yr)
          
      
    names_list=re.findall(r'<tr align="right"><td>(\d+)</td><td>(\w+)</td><td>(\w+)</td>',wholepage)
    names_rank=[i[1]+i[2]+' ' +i[0] for i in names_list]
    names.extend(names_rank)
    return names
  
  filename='/home/swap9047/Desktop/google-python-exercises/babynames/baby1990.html'
  extract_names(filename)
  
  def main():
    # This command-line parsing code is provided.
    # Make a list of command line arguments, omitting the [0] element
    # which is the script itself.
    args = sys.argv[1:]
  
    if not args:
      print ('usage: [--summaryfile] file [file ...]')
      sys.exit(1)
  
    # Notice the summary flag and remove it from args if it is present.
    summary = False
    if args[0] == '--summaryfile':
      summary = True
      del args[0]
  
    # +++your code here+++
    # For each filename, get the names, then either print the text output
    # or write it to a summary file
    for filename in args:
        ls=extract_names(filename)
        
        text='\n'.join(ls)
        if summary:
            outf=open(filename+'.summary','w')
            outf.write(text+'\n')
            outf.close()
        else:
            print(text)
  
  if __name__ == '__main__':
    main()
  