42 lines
1.2 KiB
Markdown
42 lines
1.2 KiB
Markdown
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\[ [Index](index.md) | [Exercise 1.2](ex1_2.md) | [Exercise 1.4](ex1_4.md) \]
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# Exercise 1.3
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*Objectives:*
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- Review basic file I/O
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*Files Created:* `pcost.py`
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## (a) Working with files
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The file `Data/portfolio.dat` contains a list of lines with information
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on a portfolio of stocks. The file looks like this:
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```
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AA 100 32.20
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IBM 50 91.10
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CAT 150 83.44
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MSFT 200 51.23
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GE 95 40.37
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MSFT 50 65.10
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IBM 100 70.44
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```
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The first column is the stock name, the second column is the number of
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shares, and the third column is the purchase price of a single share.
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Write a program called `pcost.py` that opens this file, reads
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all lines, and calculates how much it cost to purchase all of the shares
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in the portfolio. To do this, compute the sum of the second column
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multiplied by the third column.
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\[ [Solution](soln1_3.md) | [Index](index.md) | [Exercise 1.2](ex1_2.md) | [Exercise 1.4](ex1_4.md) \]
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----
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`>>>` Advanced Python Mastery
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`...` A course by [dabeaz](https://www.dabeaz.com)
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`...` Copyright 2007-2023
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. This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-sa/4.0/)
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