json error

import pagerank
  4 import sys
  5 import simplejson
  6 
  7 file = sys.argv[1]
  8 json_data = open(file)
  9 #print json_data
 10 pages_list = json.load(json_data) 
 11 print pages_listt 
 12 print "#######" 
 

*************************STACKTRACE OF DOOM*******************************

Traceback (most recent call last):
  File "pagerank_list.py", line 10, in <module>
    pages_list = json.load(json_data)
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/__init__.py", line 267, in load
    parse_constant=parse_constant, **kw)
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/__init__.py", line 307, in loads
    return _default_decoder.decode(s)
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/decoder.py", line 319, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/decoder.py", line 336, in raw_decode
    obj, end = self._scanner.iterscan(s, **kw).next()
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/scanner.py", line 55, in iterscan
    rval, next_pos = action(m, context)
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/json/decoder.py", line 193, in JSONObject
    raise ValueError(errmsg("Expecting , delimiter", s, end - 1))
ValueError: Expecting , delimiter: line 3 column 2 (char 58)
Macintosh-2:python marlena$ python pagerank_list.py pagerank_names_file.txt 
Traceback (most recent call last):
  File "pagerank_list.py", line 5, in <module>
    import simplejson