Function - update record()

[Men]

Hi guys,

I have half of this code running. It's the other half that's busting my brain.

On second thought, when I run it outside of the function the first half works. Inside the function...no clue because I can't get the other half running.

Once again, your support is appreciated.

buckets = [ ('[email protected]',{'first_name':'john','last_name':'doe'}),
            ('[email protected]',{'first_name':'jane','last_name':'doe'}),
            ('[email protected]',{'first_name':'derek','last_name':'zoolander'}),
            ('[email protected]',{'first_name':'murph','last_name':'cooper'}),
            ('[email protected]',{'first_name':'ned','last_name':'stark'})
            ]

def update_record(list_of_records, email, first_name, last_name):
    """
    This function is created to reset the value of the first_name and last_name
    for a record found with a specific email address while leaving the rest of
    the list unchanged. If the email address does not exist, then append a new
    record to the list with the new email address, first name and last name.
    """
    ## Write code below ##
    new_values = []
    for k, v in enumerate(list_of_records):
        email, full_name = v
        #email = v[0]
        first_name = full_name['first_name']
        last_name = full_name['last_name']
        if 'email' == email and 'first_name' != first_name and 'last_name' != last_name:
            full_name.update({'first_name': first_name})
            full_name.update({'last_name': last_name})
        # elif 'email' != email and 'first_name' != first_name and 'last_name' != last_name:
        #     #email['email'].append('email')
        #     full_name['first_name'].append('first_name')
        #     full_name['last_name'].append(last_name)
   ## end of function ##

update_record(buckets,'[email protected]','jon','snow')

[Larz60+]

Try:

buckets = [ ('[email protected]',{'first_name':'john','last_name':'doe'}),
            ('[email protected]',{'first_name':'jane','last_name':'doe'}),
            ('[email protected]',{'first_name':'derek','last_name':'zoolander'}),
            ('[email protected]',{'first_name':'murph','last_name':'cooper'}),
            ('[email protected]',{'first_name':'ned','last_name':'stark'})
            ]

def update_record(list_of_records, email, first_name, last_name):
    for n, entry in enumerate(list_of_records):
        if entry[0] == email:
            entry[1]['first_name'] = first_name
            entry[1]['last_name'] = last_name
            break
        else:
            entry = [email, {'first_name': f"{first_name}", 'last_name': f"{last_name}"}]
            list_of_records.append(entry)

update_record(buckets,'[email protected]','jon','snow')
for entry in buckets:
    print(entry)

results:

Output:
('[email protected]', {'first_name': 'jon', 'last_name': 'snow'})
('[email protected]', {'first_name': 'jane', 'last_name': 'doe'})
('[email protected]', {'first_name': 'derek', 'last_name': 'zoolander'})
('[email protected]', {'first_name': 'murph', 'last_name': 'cooper'})
('[email protected]', {'first_name': 'ned', 'last_name': 'stark'}

[Men]

Hi Larz60,

Thank you very much but two things:

1. I don't know how but I copied and pasted code, however my output is the original list:

Output:
Changing john's first name to jon and last name to snow
('[email protected]', {'first_name': 'john', 'last_name': 'doe'})
('[email protected]', {'first_name': 'jane', 'last_name': 'doe'})
('[email protected]', {'first_name': 'derek', 'last_name': 'zoolander'})
('[email protected]', {'first_name': 'murph', 'last_name': 'cooper'})
('[email protected]', {'first_name': 'ned', 'last_name': 'stark'})

2. The second half of the code was supposed compare the email, first_name and last_name and if none of the givens were in the list then that record should be appended to the list.

For ex: '[email protected]', 'iron', 'man' (this record does not figure in the list and should be appended.)

Cheers,

Try:

buckets = [ ('[email protected]',{'first_name':'john','last_name':'doe'}),
            ('[email protected]',{'first_name':'jane','last_name':'doe'}),
            ('[email protected]',{'first_name':'derek','last_name':'zoolander'}),
            ('[email protected]',{'first_name':'murph','last_name':'cooper'}),
            ('[email protected]',{'first_name':'ned','last_name':'stark'})
            ]

def update_record(list_of_records, email, first_name, last_name):
    for n, entry in enumerate(list_of_records):
        if entry[0] == email:
            entry[1]['first_name'] = first_name
            entry[1]['last_name'] = last_name
            break
        else:
            entry = [email, {'first_name': f"{first_name}", 'last_name': f"{last_name}"}]
            list_of_records.append(entry)

update_record(buckets,'[email protected]','jon','snow')
for entry in buckets:
    print(entry)

results:

Output:
('[email protected]', {'first_name': 'jon', 'last_name': 'snow'})
('[email protected]', {'first_name': 'jane', 'last_name': 'doe'})
('[email protected]', {'first_name': 'derek', 'last_name': 'zoolander'})
('[email protected]', {'first_name': 'murph', 'last_name': 'cooper'})
('[email protected]', {'first_name': 'ned', 'last_name': 'stark'}

[ibreeden]

The "else" in line 14 should belong to the "for" block, not to the "if" block. So it should be un-indented.

[Men]

Nope...that doesn't work either. Returns the same output.

Quick question though...if, else and elif always go together, how can it be for the "for loop"?

The "else" in line 14 should belong to the "for" block, not to the "if" block. So it should be un-indented.

[Larz60+]

Ibreden was correct,

with code as follows:

buckets = [ ('[email protected]',{'first_name':'john','last_name':'doe'}),
            ('[email protected]',{'first_name':'jane','last_name':'doe'}),
            ('[email protected]',{'first_name':'derek','last_name':'zoolander'}),
            ('[email protected]',{'first_name':'murph','last_name':'cooper'}),
            ('[email protected]',{'first_name':'ned','last_name':'stark'})
            ]

def update_record(list_of_records, email, first_name, last_name):
    for n, entry in enumerate(list_of_records):
        if entry[0] == email:
            entry[1]['first_name'] = first_name
            entry[1]['last_name'] = last_name
            break
    else:
        entry = [email, {'first_name': f"{first_name}", 'last_name': f"{last_name}"}]
        list_of_records.append(entry)

results are:

Output:
('[email protected]', {'first_name': 'jon', 'last_name': 'snow'})
('[email protected]', {'first_name': 'jane', 'last_name': 'doe'})
('[email protected]', {'first_name': 'derek', 'last_name': 'zoolander'})
('[email protected]', {'first_name': 'murph', 'last_name': 'cooper'})
('[email protected]', {'first_name': 'ned', 'last_name': 'stark'})

If you do not get these results, you didn't copy correctly

[ibreeden]

Quick question though...if, else and elif always go together, how can it be for the "for loop"?

Please read "The for statement" to see how it is defined.
The "else" block will be executed once after the "for" block has successfully executed N times. (Where N >= 0 .) The "else" block will not be executed if the "for" block is ended with a "break" statement.
That is exactly what you want. The for loops through all records. If it finds the record to be updated it updates it and leaves the loop with "break" so the "else" is not executed. If the record to be updated is not found, the "else" is entered which inserts the record with the new data.

[Men]

Really!!! Is that an insult to my intelligence or what?

If you do not get these results, you didn't copy correctly

Nevertheless, it's not running...I'll continue trying on my own.

Thx for the support. Cheers.

[Men]

Will do...I'll read up on it.

Quick question though...if, else and elif always go together, how can it be for the "for loop"?

Please read "The for statement" to see how it is defined.
The "else" block will be executed once after the "for" block has successfully executed N times. (Where N >= 0 .) The "else" block will not be executed if the "for" block is ended with a "break" statement.
That is exactly what you want. The for loops through all records. If it finds the record to be updated it updates it and leaves the loop with "break" so the "else" is not executed. If the record to be updated is not found, the "else" is entered which inserts the record with the new data.

[Larz60+]

The results that are shown in my last post are actual results from running the code shown.
Nothing more nor less.