Python thinks json is a local variable

Question

This function is supposed to manipulate values in a dictionary stored as a file. I am getting

"local variable 'json' referenced before assignment"

on the fourth line, "dictio = json.loads()."

I have imported json, in fact the function below this runs perfectly well performing almost the same task. Unlike the later function, this one is also throwing an empty queue error, even though I have not intentionally asked for multithreading.

def updateTally(lefty):                                          #Tally records responses to each question
    global num, total, thisQ 
    rf = open("20QTally.json", "r")
    dictio = json.loads(rf.read())
    rf.close()

    dictio[str(0)] += 1
    total = dictio[str(0)]
    if lefty == 1:
        dictio[str(num)] +=1
    thisQ = dictio[str(num)]

    json = json.dumps(dictio)
    wf = open("20QTally.json", "w")
    wf.write(json)
    wf.close()

def record_score(score): # Opens, reads, writes, and closes the score file, 20QScores.txt (filename) global total scoref = open(filename, "r") # Records and reports individuals' responses sf = json.loads(scoref.read()) # Json helps with string and integer writing and reading to files. key = str(score) if key in sf: sf[key] += 1 else: sf[key] = 1 #etc.

Janar · Accepted Answer · 2018-07-05 20:09:04Z

5

you are trying to assign value to json here

json = json.dumps(dictio)

change the variable name

answered Jul 5, 2018 at 20:09

Janar

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2 Comments

Gortoon Over a year ago

Amazing! That is code I borrowed from somewhere. This change fixed both problems (I see now how the queue was being invoked now.) The error was coming on a different line, THANK YOU SO MUCH!

pspahn Over a year ago

Just as an extra quirk - I was getting the same thing and was really confused since I wasn't declaring any variables named json, however; I think some sort of autocomplete or GitHub CoPilot or something like that had previously declared a variable named json and it was in a block of code that came after my return statement, and thus VS Code had it greyed out and my brain just completely ignored that it was there. So Python will still throw an error in code that is unreachable.

Artur Daveyan · Accepted Answer · 2018-07-05 20:17:04Z

3

Its's because you are shadowing the json module declaring variable with the same name. Just don't do that, get some name that is unique within the scope.

answered Jul 5, 2018 at 20:17

Artur Daveyan

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