python loop through dictionary

a_dict = {'color': 'blue', 'fruit': 'apple', 'pet': 'dog'}
for key, value in a_dict.items():
  print(key, '->', value)

dictionary = {52:"E",126:"A",134:"B",188:"C",189:"D"}
for key, value in dictionary.items():
	print(key)
	print(value)

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

#iterate the dict by keys
for key in a_dict:
	print(key)
#iterate the dict by items - (key,value)
for item in a_dict.items():
    print(item)
#iterate the dict by values
for value in a_dict.values():
    print(value)

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

d = {'x': 1, 'y': 2, 'z': 3} 
for key in d:
    print key, 'corresponds to', d[key]

a_dict = {"color": "blue", "fruit": "apple", "pet": "dog"}

# Will loop through the dict's elements (key, value) WITHOUT ORDER
for key, value in a_dict.items():
  print(key, '->', value)