Thread: Python newbie

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    Python newbie


    Hi, I am very new to python and i currently had to do an assignment and eventhough i could do most of it but got struck in the middle. I hope i could get some help you finish my assignment. Thanks

    Basically i have to write a python program to generate the below:

    PHP Code:
     balance 4213
                  annualInterestRate 
    0.2
                  monthlyPaymentRate 
    0.04
                  
                  Result Your Code Should Generate
    :
                  -------------------
                  
    Month1
                  Minimum monthly payment
    168.52
                  Remaining balance
    4111.89
                  Month
    2
                  Minimum monthly payment
    164.48
                  Remaining balance
    4013.2
                  Month
    3
                  Minimum monthly payment
    160.53
                  Remaining balance
    3916.89
                  Month
    4
                  Minimum monthly payment
    156.68 
    Here is my code for that:
    PHP Code:
     b0 4213
    print('balance =' str(b0))
    0.2
    print('Annual interest rate =' str(r))
    0.04
    print('montly payment rate =' str(m))

    Month 1
    while Month <= 4:  
        print(
    'Month:' str(Month))
        
    mmp round(b02)
        print(
    'Minimum monthly payment:' str(mmp))
        
    ub0 b0 mmp
        rb 
    round(ub0 + (r/12.0 ub0), 2
        print(
    'Remaining balance:' str(rb))
        
    Month Month 1    
        
    print('Month:' str(Month))  
        
    mmp round(rb2)
        print(
    'Minimum monthly payment:' str(mmp))
        
    ub0 rb mmp
        rb 
    round(ub0 + (r/12 ub0), 2)
        print(
    'Remaining balance:' str(rb))
        
    Month Month 
    When i run the above i am getting the following:

    PHP Code:
    balance =4213
    Annual interest rate 
    =0.2
    montly payment rate 
    =0.04
    Month
    :1
    Minimum monthly payment
    :168.52
    Remaining balance
    :4111.89
    Month
    :2
    Minimum monthly payment
    :164.48
    Remaining balance
    :4013.2
    Month
    :3
    Minimum monthly payment
    :168.52
    Remaining balance
    :4111.89
    Month
    :4
    Minimum monthly payment
    :164.48
    Remaining balance
    :4013.2
    Total paid
    :199.8
    Remaining balance
    :4013.2 
    As you can see i got only two months correct but after that the last two months have the same values as the first two months. Could somebody point to me where i am going wrong.

    Thanks
    Upendra
  2. #2
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    You always subtract the payment from the original balance (b0) on each pass through the loop
    Code:
    b0 = 4213 
    print('balance =' + str(b0)) 
    r = 0.2 
    print('Annual interest rate =' + str(r)) 
    m = 0.04 
    print('montly payment rate =' + str(m)) 
    min_payment=round(m * b0, 2) 
    remaining_balance=b0
    Month = 1 
    while Month <= 4:   
        print('\nMonth:' + str(Month)) 
        print('Minimum monthly payment:', min_payment) 
        remaining_balance -= min_payment
        print('Remaining balance:', remaining_balance) 
        Month = Month + 1

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