def clear$\_$screen$()$:

print$("$

$")$

def enter$\_$pin$()$:

correct$\_$pin $="1553"$

attempts $=0$

while attempts $<3$:

pin $=$ input$("$Please enter your PIN: $")$

if pin $==$ correct$\_$pin:

return True

else:

print$("$Invalid PIN. Please try again."$)$

attempts $+=1$

clear$\_$screen$()$

print$("$Too many illegal PINs. Try again later."$)$

return False

def show$\_$menu$()$:

print$("***$ Welcome to the ATM system $***")$

print$("1)$ Checking account balance"$)$

print$("2)$ Savings account balance"$)$

print$("3)$ Withdraw Cash from either account"$)$

print$("4)$ Deposit"$)$

print$("5)$ Transfer from savings account to checking account"$)$

print$("6)$ Transfer from checking account to savings account"$)$

print$("7)$ Exit"$)$

def transfer$\_$funds$($from$\_$account, to$\_$account, amount$)$:

if amount $>$ from$\_$account$[\text{'}$balance$\text{'}]$:

print$("$Transaction not completed. Insufficient funds."$)$

print$($f$"$Current Balance: $$\{$from$\_$account$[\text{'}$balance$\text{'}]$:$\mathrm{.}2$f$\}")$

else:

from$\_$account$[\text{'}$balance$\text{'}]-=$ amount

to$\_$account$[\text{'}$balance$\text{'}]+=$ amount

print$($f$"$Transaction successful. Transferred $$\{$amount:$\mathrm{.}2$f$\}.")$

def withdraw$\_$cash$($account$,$ amount$)$:

if amount $>$ account$[\text{'}$balance$\text{'}]$:

print$("$Transaction not completed. Insufficient funds."$)$

print$($f$"$Current Balance: $$\{$account$[\text{'}$balance$\text{'}]$:$\mathrm{.}2$f$\}")$

else:

account$[\text{'}$balance$\text{'}]-=$ amount

print$($f$"$Transaction successful. Withdrawn $$\{$amount:$\mathrm{.}2$f$\}.")$

def main$()$:

checking$\_$account $=\{\text{'}$balance$\text{'}$: $2395\mathrm{.}63\}$

savings$\_$account $=\{\text{'}$balance$\text{'}$: $0\}$

if not enter$\_$pin$()$:

return

choice $=\text{'}\text{'}$

while choice $!=\text{'}7\text{'}$:

show$\_$menu$()$

choice $=$ input$("$Please select option $(1-7)$: $")$

clear$\_$screen$()$

if choice $==\text{'}1\text{'}$:

print$($f$"$Checking Account Balance: $$\{$checking$\_$account$[\text{'}$balance$\text{'}]$:$\mathrm{.}2$f$\}")$

elif choice $==\text{'}2\text{'}$:

print$($f$"$Savings Account Balance: $$\{$savings$\_$account$[\text{'}$balance$\text{'}]$:$\mathrm{.}2$f$\}")$

elif choice $==\text{'}3\text{'}$:

account$\_$choice $=$ input$("$Withdraw from: $1)$ Checking $2)$ Saving: $")$

amount $=$ float$($input$("$Enter withdrawal amount: $$"))$

if account$\_$choice $==\text{'}1\text{'}$:

withdraw$\_$cash$($checking$\_$account, amount$)$

elif account$\_$choice $==\text{'}2\text{'}$:

withdraw$\_$cash$($savings$\_$account, amount$)$

else:

print$("$Invalid choice. Please select $1$ for Checking or $2$ for Saving."$)$

elif choice $==\text{'}5\text{'}$:

amount $=$ float$($input$("$Enter amount to transfer from savings to checking: $$"))$

transfer$\_$funds$($savings$\_$account, checking$\_$account, amount$)$

elif choice $==\text{'}6\text{'}$:

amount $=$ float$($input$("$Enter amount to transfer from checking to savings: $$"))$

transfer$\_$funds$($checking$\_$account, savings$\_$account, amount$)$

elif choice $==\text{'}7\text{'}$:

print$("$Thank you for using the ATM system."$)$

else:

print$("$Invalid option. Please choose a valid option $(1-7).")$

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

main$()$