Use dict.fromkeys() to create an empty dictionary with keys to an empty value in Python.
dict.fromkeys(keys)
Example create an empty dictionary with keys in Python
Simple example code.
keys = ["A", "B", "C", "D"]
d = dict.fromkeys(keys)
print(d)
Output:
Another example By iterating through the list
keys = ["A", "B", "C", "D"]
# initialize dictionary
d = {}
# iterating through the elements of list
for i in keys:
d[i] = None
print(d)
Output: {‘A’: None, ‘B’: None, ‘C’: None, ‘D’: None}
How to initialize a dict with keys from a list and empty value in Python?
keys = [1,2,3]You can use the dict fromkeys method or dict-comprehension to initialize a dict with keys from a list and empty value.
keys = [1, 2, 3]
print(dict.fromkeys(keys))
OR
keys = [1, 2, 3]
res = {key: None for key in keys}
print(res)
Output: {1: None, 2: None, 3: None}
Do comment if you have any doubts and suggestions on this Python dict tutorial.
Note: IDE: PyCharm 2021.3.3 (Community Edition)
Windows 10
Python 3.10.1
All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.