I have two lists of data like the following: LIST1 [[5L, 1L, 1L, 'Personal Information'], [14L, 2L, 1L, '']]
LIST2 [{'code': 5L, 'name': 'First Name', 'value': [''], 'label': 'First Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 1L}, {'code': 14L, 'name': 'Last Name', 'value': [''], 'label': 'Last Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 2L}, {'code': 16L, 'name': 'Job Title', 'value': [], 'label': 'Job Title', 'width': 40L, 'separator': '', 'height': 0L, 'type': 2L, 'order': 3L}] The important comparison values here are list[0] for each list in LIST1 and dictionary["code"] for each dictionary in LIST2. What I am doing is looking for a pythonic way to parse the LIST2 "code" values and make appropriate changes to to each dictionary if the "code" value is the first element of a list in LIST1. The final result may look like this given that the change is adding a new key/value of "VERIFIED"/1 for the matches. LIST3 [{'VERIFIED':1,'code': 5L, 'name': 'First Name', 'value': [''], 'label': 'First Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 1L}, {'VERIFIED':1,'code': 14L, 'name': 'Last Name', 'value': [''], 'label': 'Last Name', 'width': 0L, 'separator': ',', 'height': 0L, 'type': 2L, 'order': 2L}, {'code': 16L, 'name': 'Job Title', 'value': [], 'label': 'Job Title', 'width': 40L, 'separator': '', 'height': 0L, 'type': 2L, 'order': 3L}] I know I could do this with two for loops, but am looking for a better solution maybe involving list comprehension. Any pointers are appreciated. Thanks -- http://mail.python.org/mailman/listinfo/python-list