Question

For this portion of the lab, you will reuse the program you wrote before
That means you will open the lab you wrote in the previous assignment and change it. You should NOT start from scratch. Also, all the requirements/prohibitions from the previous lab MUST also be included /omitted from this lab.
Redesign the solution in the following manner:

1. All the functions used are value-returning functions.

2. Put the functions in an external module and let the main program import the module.

Below I am showing the program I must reuse. How can I add the new requirements? Thanks.

#Create functions to convert the given metric to another metric and print values
def MilesToKm(Miles):
Km = Miles * 1.6
print(f"Miles: {format(Miles,'.2f')}, kilometers: {format(Km,'.2f')}")

def FahToCel(Fahrenheit):
Celsius = (Fahrenheit - 32) * 5 / 9
print(f"farehnheit: {format(Fahrenheit,'.2f')}, celsius: {format(Celsius,'.2f')}")

def GalToLit(Gallons):
Liters = Gallons * 3.9
print(f"gallons: {format(Gallons,'.2f')}, liters: {format(Liters,'.2f')}")

def PoundsToKg(Pounds):
Kg = Pounds * 3.45
print(f"pounds: {format(Pounds,'.2f')}, kilograms: {format(Kg,'.2f')}")

def InchesToCm(Inches):
Cm = Inches * 2.54
print(f"inches: {format(Inches,'.2f')}, centimeters: {format(Cm,'.2f')}")

#Create main function to give choice of conversion
def main():
string = '''
1: Convert miles to km
2: Convert fahrenheit to celsius
3: Convert gallons to liters
4: Convert pounds to kg
5: Convert inches to cm'''

metric_name = ('miles','fahrenheit','gallons','pounds','inches')
convert_name = ('km','celsius','liters','kg','cm')
print(string)
choice = int(input('Enter your choice: '))
count = 3
flag = True
while(flag):
input_value = float(input("Please enter how much {0} would you like to convert into {1}: ".format(metric_name[choice-1] , convert_name[choice-1])))
  
if choice ==2:
if input_value >= 1000:
count -= 1
print('Invalid input! You have',count,'chance(s) to enter a valid input')
else:
FahToCel(input_value)
flag = False
else:
if input_value < 0:
count -= 1
print('Invalid input! You have',count,'chance(s) to enter a valid input')
else:
if choice == 1:
MilesToKm(input_value)
if choice == 3:
GalToLit(input_value)
if choice == 4:
PoundsToKg(input_value)
if choice == 5:
InchesToCm(input_value)
flag = False
if count == 0:
flag = False

main()
  
  

Answer 1

1. Create a file named conversions.py and implement your functions in that file.
2. Import the functions in the main file like this "from conversions import * "
3. We can use separate files for different functions also

Code

Conversions.py

def MilesToKm(Miles):
       Km = Miles * 1.6
       print(f"Miles: {format(Miles,'.2f')}, kilometers: {format(Km,'.2f')}")

def FahToCel(Fahrenheit):
       Celsius = (Fahrenheit - 32) * 5 / 9
       print(f"farehnheit: {format(Fahrenheit,'.2f')}, celsius: {format(Celsius,'.2f')}")

def GalToLit(Gallons):
       Liters = Gallons * 3.9
       print(f"gallons: {format(Gallons,'.2f')}, liters: {format(Liters,'.2f')}")

def PoundsToKg(Pounds):
       Kg = Pounds * 3.45
       print(f"pounds: {format(Pounds,'.2f')}, kilograms: {format(Kg,'.2f')}")

def InchesToCm(Inches):
       Cm = Inches * 2.54
       print(f"inches: {format(Inches,'.2f')}, centimeters: {format(Cm,'.2f')}")

  

Main.py

from conversions import *
#Create main function to give choice of conversion
def main():
   string = '''
   1: Convert miles to km
   2: Convert fahrenheit to celsius
   3: Convert gallons to liters
   4: Convert pounds to kg
   5: Convert inches to cm'''

   metric_name = ('miles','fahrenheit','gallons','pounds','inches')
   convert_name = ('km','celsius','liters','kg','cm')
   print(string)
   choice = int(input('Enter your choice: '))
   count = 3
   flag = True
   while(flag):
       input_value = float(input("Please enter how much {0} would you like to convert into {1}: ".format(metric_name[choice-1] , convert_name[choice-1])))

       if choice ==2:
           if input_value >= 1000:
               count -= 1
               print('Invalid input! You have',count,'chance(s) to enter a valid input')
           else:
               FahToCel(input_value)
               flag = False
       else:
           if input_value < 0:
               count -= 1
               print('Invalid input! You have',count,'chance(s) to enter a valid input')
           else:
               if choice == 1:
                   MilesToKm(input_value)

              if choice == 2:
                   FahToCel(input_value)
               if choice == 3:
                   GalToLit(input_value)
               if choice == 4:
                   PoundsToKg(input_value)
               if choice == 5:
                   InchesToCm(input_value)
           if count == 0:
               flag = False
main()

Output

def Miles Tokm(Miles): Km = Miles * 1.6 print(f"Miles: {format(Miles,'.2f')}, kilometers: {format(Km,'.2f')}"), def FahToCel(Fahrenheit): Celsius = (Fahrenheit - 32) * 5 / 9 print(F"farehnheit: {format(Fahrenheit,'.2f')}, celsius: {format(Celsius,'.2f')}"), def Gallolit(Gallons): Liters = Gallons * 3.9 print(f"gallons: {format(Gallons,'.2f')}, liters: {format(Liters,'.2f')}"), def PoundsTokg(Pounds): kg = Pounds * 3.45 print(f"pounds: {format(Pounds,'.2f')}, kilograms: {format(Kg,'.2f')}"), def pounding the one and Format (pounds, ".2f"}}," def Inches ToCm(Inches): Cm = Inches * 2.54 print(f"inches: {format(Inches,'.2f')}, centimeters: {format(Cm,'.2f')}"),

from conversions import * #Create main function to give choice of conversion def main(): string = 1: Convert miles to km 2: Convert fahrenheit to celsius 3: Convert gallons to liters 4: Convert pounds to kg 5: Convert inches to cm metric name= ('miles', 'fahrenheit', 'gallons', 'pounds", "inches'), convert_name = ('km', 'celsius', 'liters', 'kg, 'cm') print(string) choice = int(input('Enter your choice: ") count = 3 flag = True while(flag): input value = float(input("Please enter how much {@} would you like to convert into {1}: ".format(metric_name[ choice-1] , convert_name[ choice-1]))) if choice ==2: if input_value >= 1000: count -= 1 print('Invalid input! You have',count, 'chance(s) to enter a valid input') else: FahToCel(input_value) flag = False else: input_value < 0: count -= 1 print("Invalid input! You have',count, 'chance(s) to enter a valid input') else: if choice == 1: Milestokm(input_value) if choice == 3: GalToLit(input_value) if choice == 4: PoundsTokg(input_value) if choice == 5: InchesToCm(input_value) if count == 0: flag = False main()

C:\Users\Sai\Desktop\HomeworkLib>python main.py 1: Convert miles to km 2: Convert fahrenheit to celsius 3: Convert gallons to liters 4: Convert pounds to kg 5: Convert inches to cm Enter your choice: 1 Please enter how much miles would you like to convert into km: 1 Miles: 1.00, kilometers: 1.60 Please enter how much miles would you like to convert into km: 2.7 Miles: 2.70, kilometers: 4.32 Please enter how much miles would you like to convert into km: 8 Miles: 8.00, kilometers: 12.80 Please enter how much miles would you like to convert into km: -1 Invalid input! You have 2 chance(s) to enter a valid input Please enter how much miles would you like to convert into km: -1, Invalid input! You have 1 chance(s) to enter a valid input Please enter how much miles would you like to convert into km: -1 Invalid input! You have a chance(s) to enter a valid input