First ToDo Data Structure:

When creating a more complex data structure it is best to start with one $($maybe two$)$ record

to avoid adding a ton of code that may change. Once you test and are satisfied more records

can be added. We want a dictionary to hold a key and another dictionary. Let$$s start with

the inner dictionary that would pair keys Name, C$,$ and S with their values from the test data:

Dictionary uses braces and key: value pairs comma separated.

$\{$Pin$$: $9999,$Name$$: $$Elva Lin$,$C$$: $1\mathrm{.}00,$S$$: $25\mathrm{.}50\}$

Above would be a dictionary holding name, checking, and savings account values.

The next step is to pair that dictionary as a value with a key that will be the customer$$s pin

and make that a dictionary. See the inner dictionary from above is highlighted:

$\{$ Key : Value $\}$

$\{$selin$2$ : $\{$Pin$$: $9999,$Name$$: $$Elva Lin$,$C$$: $1\mathrm{.}00,$S$$: $25\mathrm{.}50\}\}$

Store your newly created dictionary in a name called accounts. Make sure we have two

customers info in the accounts dictionary, with one has your asurite as the Key.

$1\mathrm{.}1$ Make sure the variable account is not used. Before you comment out account it will be

easier to rename all instances of that name in your code to accounts. Do this by clicking on

account and wait till PyCharm highlights account. Right$-$Click and select Refactor $>$

Rename. Change to accounts and click Refactor.