/Python/TypeError: unhashable type: 'list' python dictionary

TypeError: unhashable type: 'list' python dictionary

The error you gave is due to the fact that in python, dictionary keys must be immutable types (if key can change, there will be problems), and list is a mutable type.

Your error says that you try to use a list as dictionary key, you'll have to change your list into tuples if you want to put them as keys in your dictionary.

According to the python doc :

The only types of values not acceptable as keys are values containing lists or dictionaries or other mutable types that are compared by value rather than by object identity, the reason being that the efficient implementation of dictionaries requires a key’s hash value to remain constant

Source: alysivji.github.io

Similar codes

4 votes369 views4 answers
Printing hello world in python
Python
1 vote357 views1 answer
Groupby year datetime pandas
Python
0 vote350 views1 answer
Python read binary trj file
Python
3 votes337 views2 answers
Python dict order a dict by key
Python
0 vote336 views1 answer
Linkedin dynamic scrolling using selenium python
Python
0 vote349 views2 answers
Conda install dash
Python
18 votes344 views6 answers
Strptime
Python
1 vote308 views1 answer
Make column nullable django
Python Django
1 vote424 views6 answers
Quick sort python
Python
2 votes356 views1 answer
Flask for loops
Python