---
id: practical-python-9.3
source_exercise_id: "9.3"
title: "Top-level Scripts"
section: "9.1 Packages"
source_path: "09_Packages/01_Packages.md"
source_repo: "https://github.com/dabeaz-course/practical-python"
source_commit: "93dca856b41c61a0a0f85ae334116e4c125629ea"
student_visible_solution: false
has_private_solution: true
skip: false
---

# Exercise 9.3: Top-level Scripts

> Source: Practical Python Programming, `09_Packages/01_Packages.md`.

### Exercise 9.3: Top-level Scripts

Using the `python -m` command is often a bit weird.  You may want to
write a top level script that simply deals with the oddities of packages.
Create a script `print-report.py` that produces the above report:

```python
#!/usr/bin/env python3
# print-report.py
import sys
from porty.report import main
main(sys.argv)
```

Put this script in the top-level `porty-app/` directory.  Make sure you
can run it in that location:

```
shell % cd porty-app
shell % python3 print-report.py portfolio.csv prices.csv txt
      Name     Shares      Price     Change
---------- ---------- ---------- ----------
        AA        100       9.22     -22.98
       IBM         50     106.28      15.18
       CAT        150      35.46     -47.98
      MSFT        200      20.89     -30.34
        GE         95      13.48     -26.89
      MSFT         50      20.89     -44.21
       IBM        100     106.28      35.84

shell %
```

Your final code should now be structured something like this:

```
porty-app/
    portfolio.csv
    prices.csv
    print-report.py
    README.txt
    porty/
        __init__.py
        fileparse.py
        follow.py
        pcost.py
        portfolio.py
        report.py
        stock.py
        tableformat.py
        ticker.py
        typedproperty.py
```

[Contents](../Contents.md) \| [Previous (8.3 Debugging)](../08_Testing_debugging/03_Debugging.md) \| [Next (9.2 Third Party Packages)](02_Third_party.md)

## 关联来源

- [[summaries/01_Packages]]