keep unique values between two dictionaries

[kdt]

Hi

Trying to create a function that takes two dictionaries, and deletes key:values that are common in both dictionaries. So far I have the following; but I can only delete values in one dictionary as I am iterating over the other. Or is there a way to rename keys in dictionaries? Thanks in advance.

def filterByKey(dict1, dict2):
    '''
    Takes two dictionaries and deletes
        matching records;
    Dict1 is the main dictionary;
    Dict2 is the secondary dictionary.
    RETURNS: dictionary Dict1 of unique
        values.
    '''
    for key in dict2:
        if key in dict1.keys():
            del dict1[key]
            
    return dict1

Cheers

[rhitam30111985]

Hi

Trying to create a function that takes two dictionaries, and deletes key:values that are common in both dictionaries. So far I have the following; but I can only delete values in one dictionary as I am iterating over the other. Or is there a way to rename keys in dictionaries? Thanks in advance.

def filterByKey(dict1, dict2):
    '''
    Takes two dictionaries and deletes
        matching records;
    Dict1 is the main dictionary;
    Dict2 is the secondary dictionary.
    RETURNS: dictionary Dict1 of unique
        values.
    '''
    for key in dict2:
        if key in dict1.keys():
            del dict1[key]
            
    return dict1

Cheers

del dict1[key] will delete the values .. not the key..
u need to do this:

[CODE=python]
for key in dict2:
if key in dict1.keys():
del key
dict1=dict2 #since the updated dictionary is contained in dict2 at this point
return dict1
[/CODE]

[rhitam30111985]

i think above solution is wrong...
this shud do the trick:
[CODE=python]
for key in dict2:
if key in dict1.keys():
dict1.pop(key)


return dict1
[/CODE]

[KaezarRex]

Hi

Trying to create a function that takes two dictionaries, and deletes key:values that are common in both dictionaries. So far I have the following; but I can only delete values in one dictionary as I am iterating over the other. Or is there a way to rename keys in dictionaries? Thanks in advance.

def filterByKey(dict1, dict2):
    '''
    Takes two dictionaries and deletes
        matching records;
    Dict1 is the main dictionary;
    Dict2 is the secondary dictionary.
    RETURNS: dictionary Dict1 of unique
        values.
    '''
    for key in dict2:
        if key in dict1.keys():
            del dict1[key]
            
    return dict1

Cheers

Try it this way:
[CODE=python]for key in dict2.keys():
if key in dict1.keys():
del dict1[key]
del dict2[key]
return [dict1, dict2]
[/CODE]

That way your iterating over a list of the keys that dict2 contained when you called the function, but not the actual dictionary.

[kdt]

Thanks guys,

It's working now. Iterating over the dictionary keys solved the problems - so thanks again.