Get List of Values From Dictionary - Python

We are given a dictionary and our task is to extract all the values from it and store them in a list. For example, if the dictionary is d = {'a': 1, 'b': 2, 'c': 3}, then the output would be [1, 2, 3].

Using dict.values()

We can use dict.values() along with the list() function to get the list. Here, the values() method is a dictionary method used to access the values from the key: value pairs and we are then converting the values to a list by using the list() function.

d = {'a': 1, 'b': 2, 'c': 3}
res = list(d.values())
print(res)

[1, 2, 3]

Using map() Function

In this method we use map() function, which applies a specific method (d.get in this case) to each key in the dictionary to retrieve its value.

d = {'a': 1, 'b': 2, 'c': 3}
res = list(map(d.get, d.keys()))
print(res) 

[1, 2, 3]

Explanation: map(d.get, d.keys()) calls d.get(key) for each key in d.keys() thus returning the values which are then converted to a list using list().

Using List Comprehension

In this method we use a list comprehension to iterate over the keys and access their values.

d = {'a': 1, 'b': 2, 'c': 3}
res = [d[k] for k in d]
print(res) 

[1, 2, 3]

Explanation: [d[k] for k in d] iterates through the keys (for k in d) and retrieves the value associated with each key (d[k]).

Using a For Loop

In this method we will use a Python loop to get the values of keys and append them to a new list called values and then we print it.

d = {'a': 1, 'b': 2, 'c': 3}
res = []
for k in d:
    res.append(d[k])
print(res)  

[1, 2, 3]

Explanation: The loop iterates over d (keys by default) and appends d[k] (the value) to the list values.