how to run a while loop on all values of a dict in python code example

Example 1: python iterate through dictionary

a_dict = {'apple':'red', 'grass':'green', 'sky':'blue'}
for key in a_dict:
  print key # for the keys
  print a_dict[key] # for the values

Example 2: python loop through dictionary

new_list = [something(key, value) for key, value in a_dict.items()]