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[Solved] Python, TypeError: unhashable type: ‘list’

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error Python, TypeError: unhashable type: ‘list’ in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How Python, TypeError: unhashable type: ‘list’ Error Occurs?

Today I get the following error Python, TypeError: unhashable type: ‘list’ in python.

How To Solve Python, TypeError: unhashable type: ‘list’ Error ?

  1. How To Solve Python, TypeError: unhashable type: 'list' Error ?

    To Solve Python, TypeError: unhashable type: 'list' Error As indicated by the other answers, the error is to due to k = list[0:j], where your key is converted to a list.

  2. Python, TypeError: unhashable type: 'list'

    To Solve Python, TypeError: unhashable type: 'list' Error As indicated by the other answers, the error is to due to k = list[0:j], where your key is converted to a list.

Solution 1

You’re trying to use k (which is a list) as a key for d. Lists are mutable and can’t be used as dict keys.

Also, you’re never initializing the lists in the dictionary, because of this line:

if k not in d == False:

Which should be:

if k not in d == True:

Which should actually be:

if k not in d:

Solution 2

As indicated by the other answers, the error is to due to k = list[0:j], where your key is converted to a list. One thing you could try is reworking your code to take advantage of the split function:

# Using with ensures that the file is properly closed when you're done
with open('filename.txt', 'rb') as f:
  d = {}
  # Here we use readlines() to split the file into a list where each element is a line
  for line in f.readlines():
    # Now we split the file on `x`, since the part before the x will be
    # the key and the part after the value
    line = line.split('x')
    # Take the line parts and strip out the spaces, assigning them to the variables
    # Once you get a bit more comfortable, this works as well:
    # key, value = [x.strip() for x in line] 
    key = line[0].strip()
    value = line[1].strip()
    # Now we check if the dictionary contains the key; if so, append the new value,
    # and if not, make a new list that contains the current value
    # (For future reference, this is a great place for a defaultdict :)
    if key in d:
      d[key].append(value)
    else:
      d[key] = [value]

print d
# {'AAA': ['111', '112'], 'AAC': ['123'], 'AAB': ['111']}

Note that if you are using Python 3.x, you’ll have to make a minor adjustment to get it work properly. If you open the file with rb, you’ll need to use line = line.split(b'x') (which makes sure you are splitting the byte with the proper type of string). You can also open the file using with open('filename.txt', 'rU') as f: (or even with open('filename.txt', 'r') as f:) and it should work fine.

Summery

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you? Thank You.

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