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Update page 'Day 2 homework'

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2023-03-30 07:20:34 +02:00
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Day 2 homework.md
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4. Write a small program that uses the AST module to open the lexer/parser example, and dumps the resulting AST. See if there are any arguments to parse method which make the output easier to read. 4. Write a small program that uses the AST module to open the lexer/parser example, and dumps the resulting AST. See if there are any arguments to parse method which make the output easier to read.
5. What does this do? `print("\007")` Can you figure out why? 5. What does this do? `print("\007")` Can you figure out why?
6. What does this do? `print("abcdefg\rhijklmnop")` Can you figure out why? 6. What does this do? `print("abcdefg\rhijklmnop")` Can you figure out why?
7. This is a HTTP server. Run it and connect to http://localhost:8000 . Why doesn't this do the same thing as what you see above? 7. This is an HTTP server. Run it and connect to http://localhost:8000 . Why doesn't this do the same thing as what you see above? (don't forget to shut down the HTTP server afterward.)
``` ```
import http.server import http.server
@@ -33,7 +33,7 @@ httpd = socketserver.TCPServer(("", PORT), Handler)
print(f"Serving on port {PORT}") print(f"Serving on port {PORT}")
httpd.serve_forever() httpd.serve_forever()
```(don't forget to shut down the HTTP server afterwards.) ```
8. Think of a way someone might try to commit a crime or hide an embezzlement scheme using the answers to the above two questions. Hint: applications usually output on web pages, but developers and system administrators usually troubleshoot in the console. 8. Think of a way someone might try to commit a crime or hide an embezzlement scheme using the answers to the above two questions. Hint: applications usually output on web pages, but developers and system administrators usually troubleshoot in the console.
9. Think of how you would do input validation to prevent such a crime. Replace the code REPLACE ME here so the tests pass: 9. Think of how you would do input validation to prevent such a crime. Replace the code REPLACE ME here so the tests pass: