Introduction: Python - Calculate the Log Rate/Logarithmic Rate of Return

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print ("This program will calculate the Logarithmic Rate of Return.")

import math

###  Formula for calculating the Logarithmic Rate of Return:
#  LogarithmicRateOfReturn =  (Natural Log(FinalValue/InitialValue))/TimeLength
# Find the natural log:
#    NaturalLogOfFraction = math.log(variable)
###########################################

# Enter the FinalValue, InitialValue, TimeLength
def SolveForLogarithmicRateOfReturn():
    print ("Solving for the Logarithmic Rate of Return.")

    # Enter the FinalValue 
    FinalValue = float(input("Enter the Final Value: ") )
    # Enter the InitialValue
    InitialValue = float(input("Enter the Initial Value: ") )
    # Enter the TimeLength
    TimeLength = float(input("Enter the Time Length: ") )

    # Calculate the fraction
    Fraction = (FinalValue/InitialValue)
    print("The fraction is: ", Fraction)
    # Calculate the natural log
    NaturalLog = (math.log(Fraction) )
    print("The Natural Log is: ", NaturalLog)
    # Calculate the Logarithmic Rate of Return
    LogarithmicRateOfReturn = NaturalLog/TimeLength
    print ("The logarithmic rate of return is: ", LogarithmicRateOfReturn)
        
ContinueCalculations = "y"

# Check to see if the user wants to continue to calculate the Logarithmic Rate of Return
while (ContinueCalculations=="y"):
    SolveForLogarithmicRateOfReturn()
    ContinueCalculations = input("Would like to do another calculation for the Logarithmic Rate of Return? (y/n): ")

print("==================================")
print ("Thank you to www.fxsolver.com for assistance with this formula.")

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