# Question 17
### Level 2
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**Question:**

***Write a program that computes the net amount of a bank account based a transaction log from console input. The transaction log format is shown as following:***

***D 100***

***W 200***

***¡­***

***D means deposit while W means withdrawal.***

***Suppose the following input is supplied to the program:***

***D 300***

***D 300***

***W 200***

***D 100***

***Then, the output should be:***

***500***


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### Hints:
#### In case of input data being supplied to the question, it should be assumed to be a console input.

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**Main author's Solution: Python 2**
```
import sys
netAmount = 0
while True:
    s = raw_input()
    if not s:
        break
    values = s.split(" ")
    operation = values[0]
    amount = int(values[1])
    if operation=="D":
        netAmount+=amount
    elif operation=="W":
        netAmount-=amount
    else:
        pass
print netAmount
```
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**My Solution: Python 3**
```
```