i am new to python i can't find the mistake-CodePudding

error:TypeError: list indices must be integers or slices, not dict

this is my code

for x in canidates:
if(canidates[x]['Department']==('che'or'CHE')):
    che.append(canidates[x]['reg number'])
elif(canidates[x]['Department']=='cl'or'CI'):
    ci.append(canidates[x]['reg number'])

CodePudding user response：

The for loop iterates over the elements in canidates, use this:

for x in canidates:
    if(x['Department']==('che'or'CHE')):
        che.append(x['reg number'])
    elif(x['Department']=='cl'or'CI'):
        ci.append(x['reg number'])

Also better to rename it:

for canidate in canidates:
    if(canidate ['Department']==('che'or'CHE')):
        che.append(canidate['reg number'])
    elif(canidate['Department']=='cl'or'CI'):
        ci.append(canidate['reg number'])

If you need the index, you can do this:

for index, canidate in enumerate(canidates):
    if(canidate ['Department']==('che'or'CHE')):
        che.append(canidate['reg number'])
    elif(canidate['Department']=='cl'or'CI'):
        ci.append(canidate['reg number'])

CodePudding user response：

Please alter your code as follows

for x in range(len(canidates)) :
    if(canidates[x]['Department']==('che'or'CHE')) :
        che.append(canidates[x]['reg number'])
    elif(canidates[x]['Department']=='cl'or'CI') :
        ci.append(canidates[x]['reg number'])

You are trying to iterate over canidates, a list object, in your code and access each list item in the for-loop statement. Therefore, x is a list item, not a list index in the following statements in the body of the for-loop. Each list index must be an int or slice object.

To access x as list index, you need to know the length of canidates first. Same can be done using len(canidates). Then you can access each item in the canidates list object by their indices as follows :

for x in range(len(canidates)) :

Please mind the indentation levels in Python.