write python program for managing ATM Machine,
first of all the user needs passkey to enter program,
then a list appears:
- to withdraw money.
- press 2 to transfer money.
- to deposit money.
- to display current balance.
do the program in the following 3 different ways:
- the first one without using any loops
- the second is using an inifinite loop using while,
- and the last way is using the modules concept( create a separated module called accounts.py and import it in the main python program.