hi i have got a problem writing the code for this program

[fury30]

this is the program as below and now what i need to do is add the following to it but i am not able to get how to do it

# futval.py
#    A program to compute the value of an investment
#    carried 10 years into the future
 
def main():
    print "This program calculates the future value"
    print "of a 10 year investment."
 
    principal = input("Enter the initial principal: ")
    apr = input("Enter the annualized interest rate: ")
 
    for i in range(10):
        principal = principal * (1 + apr)
 
    print "The value in 10 years is:", principal
 
main()

the output i get is

This program calculates the future value
of a 10 year investment.
Enter the initial principal: 1000
Enter the annualized interest rate: .1
The value in 10 years is: 2593.7424601

but i need to get an output like this as below

This program calculates the future value
of a 10 year investment.
Enter the initial principal: 1000
Enter the annualised interest rate: .1
Year Value
----------------
0 1100.00
1 1210.00
2 1331.00
3 1464.10
4 1610.51
5 1771.56
6 1948.72
7 2143.59
8 2357.95
9 2593.74
The value in 10 years is: 2593.74

so i would be thankful if anybody could help me out as i am new to python

[bvdet]

This can be done with string formatting, Look here under "6.6.2. String Formatting Operations" for documentation. I will post again with an example.

-BV

[bvdet]

Print the table header:

>>> print "%-5s%s" % ("Year", "Value")
Year Value

You can use string methods also:

>>> print "%s%s" % ("Year".center(6), "Value".center(8))
 Year  Value  

Print the separator:

>>> print '-'*14
--------------

Inside the for loop, print the intermediate results. Example:

>>> p = 10
>>> for i in range(10):
...     print "%-5s%.2f" % (i, p)
...     p *= 2
...     
0    10.00
1    20.00
2    40.00
3    80.00
4    160.00
5    320.00
6    640.00
7    1280.00
8    2560.00
9    5120.00
>>>