Dictionaries in loop-CodePudding

duck_1 = {
    "first_name": "Davey",
    "followers": 12865,
    "following": 120,
    "weapons": ["wit", "steely stare", "devilish good looks"]
}
duck_2 = {
    "first_name": "Jim",
    "followers": 123,
    "following": 5000,
    "weapons": ["squeak"]
}
duck_3 = {
    "first_name": "Celest",
    "followers": 40189,
    "following": 1, 
    "weapons": ["politics", "dance moves", "chess grandmaster", "immortality"]
}

duck_collection = [ duck_1, duck_2, duck_3 ]

for duck in duck_collection:
        duck1=(duck_1['followers']-duck_1['following'])
        print(duck1)
        duck2=(duck_2['followers']-duck_2['following'])
        print(duck2)
        duck3=(duck_3['followers']-duck_3['following'])

the output is:

i want the output to be:

12745
-4877
40188

and also result should be append to Trendy Ducks: [12745, -4877, 40188]

CodePudding user response：

You can use a list comprehension.

trendyDucks = [duck['followers'] - duck['following'] for duck in duck_collection]
print(trendyDucks)

CodePudding user response：

If you don't know list comprehension you could use just this:

trendyDucks = []    
for duck in duck_collection:
        trendyDucks.append(duck['followers']-duck['following'])