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Update page 'Day 2 homework'

j
2023-03-31 03:32:14 +02:00
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Day 2 homework.md
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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 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.) 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
import socketserver import socketserver
from urllib.parse import urlparse, parse_qs from urllib.parse import urlparse, parse_qs
class MyRequestHandler(http.server.SimpleHTTPRequestHandler): class MyRequestHandler(http.server.SimpleHTTPRequestHandler):
def do_GET(self): def do_GET(self):
self.send_response(200) self.send_response(200)
self.send_header('Content-type', 'text/plain') self.send_header('Content-type', 'text/plain')
self.end_headers() self.end_headers()
output_string = "abcdefg\rhijklmnop" output_string = "abcdefg\rhijklmnop"
self.wfile.write(output_string.encode()) self.wfile.write(output_string.encode())
PORT = 8000 PORT = 8000
Handler = MyRequestHandler Handler = MyRequestHandler
httpd = socketserver.TCPServer(("", PORT), Handler) httpd = socketserver.TCPServer(("", PORT), Handler)
print(f"Serving on port {PORT}") print(f"Serving on port {PORT}")
httpd.serve_forever() httpd.serve_forever()
``` ```
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. 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:
``` ```