Question

• In this assignment, we are going to work with a combination of variables representing integers, floating point numbers (decimals), and strings. Strings are also known as literals. We will create, save, and run a Python batch file (i.e., a Python script file) that will ask the user to enter the name of an investment, the amount invested, the annual return rate, and number of years, after which Python will compute the investment's final value at the end of that time period and spew out a full sentence incorporating the input and computed variables. This sentence will be put together by concatenating all the variables.
  
  A batch file is a sequence of commands that execute consecutively one after another when Python is asked to run/execute the file. Python batch files have the extension of .py and are best created in a text editor such as Notepad. Do NOT use Word or other word processors to create Python batch files -- they will result in syntax errors.
  
  Type the following commands into Notepad and save the whole thing as a Python batch file called investment.py --

  name=input("Investment name:")
  amount=int(input("Invested amount:"))
  rate=float(input("Annual return rate:"))
  years=float(input("No. of years:"))
  final_amount=amount*((1+rate)**years)
  print("An investment of","$",round(amount,2),"in",name,"today will grow to $",round(final_amount,2),"after",int(years),"years.")
  print("An investment of "+"$"+str(amount)+" in "+name+" today will grow to $"+str(round(final_amount,2))+" after "+str(int(years))+" years.")

  Now open a Command Prompt window and navigate to the directory in which you had saved investment.py, and then execute this Python script file as follows --

  C:\>py investment.py

  Experiment with various values of the input variables when prompted, and try to correlate the outputs with the last two concatenation/print commands in the script file.

  Also experiment with the commands in the script by removing the functions int, float, round, and str, and see what happens. show step by step answer using Jupyter.

Answer 1

name=input("Investment name:")
amount=int(input("Invested amount:"))
rate=float(input("Annual return rate:"))
years=float(input("No. of years:"))
final_amount=amount*((1+rate)**years)
print("An investment of","$",round(amount,2),"in",name,"today will grow to $",round(final_amount,2),"after",int(years),"years.")
print("An investment of "+"$"+str(amount)+" in "+name+" today will grow to $"+str(round(final_amount,2))+" after "+str(int(years))+" years.")