#$!/$usr$/$bin$/$env python$3$

from datetime import date

print$("$Today$\text{'}$s date:", date.today$())$

print$("$Samuel Oh$")$

# I state the code submitted is my own work.

print$(\text{'}$The Miles Per Gallon Program'$)$

# A while loop which allows the user to enter multiple times

while True:

# Asking for information & then validating

# If not valid, asking again

# Get input for miles driven

milesDriven $=$ float$($input$(\text{'}$

Enter miles driven: $\text{'}))$

# Validate miles driven $($must be non$-$negative$)$

while milesDriven $<0$:

print$(\text{'}$Invalid Entry'$)$

milesDriven $=$ float$($input$(\text{'}$Enter miles driven: $\text{'}))$

# Get input for gallons of gas used

numberOfGallons $=$ float$($input$(\text{'}$Enter gallons of gas used: $\text{'}))$

# Validate gallons of gas used $($must be non$-$negative$)$

while numberOfGallons $<0$:

print$(\text{'}$Invalid Entry'$)$

numberOfGallons $=$ float$($input$(\text{'}$Enter gallons of gas used: $\text{'}))$

# Get input for cost per gallon

costPerGallon $=$ float$($input$(\text{'}$Enter cost per gallon: $\text{'}))$

# Validate cost per gallon $($must be non$-$negative$)$

while costPerGallon $<0$:

print$(\text{'}$Invalid Entry'$)$

costPerGallon $=$ float$($input$(\text{'}$Enter cost per gallon: $\text{'}))$

# Calculating and displaying results on screen

# Calculate miles per gallon

milesPerGallon $=$ milesDriven $/$ numberOfGallons

# Calculate total gas cost

totalGasCost $=$ numberOfGallons $*$ costPerGallon

# Calculate cost per mile

costPerMile $=$ totalGasCost $/$ milesDriven

# Display results with formatting

print$(\text{'}$

Miles Per Gallon: $\%\mathrm{.}2$f$\text{'}\%$ milesPerGallon$)$

print$(\text{'}$Total Gas Cost: $$\%\mathrm{.}1$f$\text{'}\%$ totalGasCost$)$

print$(\text{'}$Cost Per Mile: $$\%\mathrm{.}1$f$\text{'}\%$ costPerMile$)$

# Ask if the user wants to enter another trip

opt $=$ input$(\text{'}$

Get entries for another trip $($y$/$n$)?\text{'})$

# If the user does not want to repeat, exit the loop

if opt $==\text{'}$n$\text{'}$ or opt $==\text{'}$N$\text{'}$:

break