Python: converting a dictionary to a list of lists

Question

Basically, I have a dictionary that I want to convert to a list of lists (with each list of components consisting of a key and a value from the dictionary).

The reason I do this is because I can iterate over this new list with a for loop and do something with the key and value. If there is an easier way to do this, I am open to suggestions.

Answer 1

for key, value in my_dict.iteritems() 

This will go through the dictionary, storing each key in key and each value in value . See docs .

Answer 2

How about this solution? No need to make your hand get dirty with an unnecessary cycle, cleaner and shorter !!!

 d = { 'a': 1, 'b': 2, 'c': 3 } map(list, d.items()) [['a', 1], ['c', 3], ['b', 2]] 

Answer 3

to iterate over keys and dictionary values:

 for key, value in D.iteritems(): # do something with them 

Answer 4

I'm not sure if this is what you are asking for, but that is how I would turn a dictionary into a list using its key as the root value.

 new_list = [] dict = {test:1, test:2, test:3} for key, value in dict.iteritems(): new_list.append((key, value)) 

This is where I am doing something very similar to what you want.

  if str(vm_mor) == vm['config.annotation']: annotation= pickle.load(open(str(vm_mor), "rb")) print annotation sql_check_exist = '''select a.vm_mor, b.license_id, c.product from vms a , vm_licenses b, licenses c where a.vm_id = b.vm_id and b.license_id = c.license_id and a.vm_mor = '%s' ''' % str(vm_mor) cursor_exist.execute(sql_check_exist) database_license = [] for vm_mor, license_id, product in cursor_exist: database_license.append((product,license_id)) checklist_database_license = [int(i[1]) for i in database_license] #make a list of 2nd element of all the tuples in the database_license list check_me = annotation['license'] for product, license_id in check_me: if license_id in checklist_database_license: print "do nothing" else: del annotation['license'] annotation['license'] = database_license change = True if change == True: change_annotation(vm_mor, annotation) change = False else: print vm['config.name'] pickle_mor(vm_mor,vm)