Python Dictionary Iteration

To grab only keys from dictionary use key() function:

colors = {"Color 1" : "Red", "Color 2" : "Yellow"}

for x in colors.keys():
    print("Key: ", x)

Result: 

Key:  Color 1
Key:  Color 2
>>> 

Same approach for values, using value() function:

colors = {"Color 1" : "Red", "Color 2" : "Yellow"}

for x in colors.values():
    print("Value: ", x)

Result:  

Value:  Red
Value:  Yellow
>>> 

Or use items() function to grab key-value pairs:

colors = {"Color 1" : "Red", "Color 2" : "Yellow"}

print("Key -> Value")
print("-" * 49)

for x, y in colors.items():
    print(x, " -> ", y)

Result:  

Key -> Value
-------------------------------
Color 1  ->  Red
Color 2  ->  Yellow
>>> 

This is how to extract keys and values into dedicated lists:

colors = {"Color 1" : "Red", "Color 2" : "Yellow"}

key_parts = []
value_parts = []

for x in colors.keys():
    key_parts.append(x)

for y in colors.values():
    value_parts.append(y)

print(key_parts)
print("-" * 59)
print(value_parts)

Result:  

['Color 1', 'Color 2']
-------------------------------
['Red', 'Yellow']
>>> 

Same as above, using only one for loop:

colors = {"Color 1" : "Red", "Color 2" : "Yellow"}

key_parts = []
value_parts = []

for x, y in colors.items():
    key_parts.append(x)
    value_parts.append(y)

print(key_parts)
print("-" * 59)
print(value_parts)

Result:  

['Color 1', 'Color 2']
-------------------------------
['Red', 'Yellow']
>>> 

Excellent. In next tutorial we will learn about functions.