仅需8道题轻松掌握Python Web应用开发 | Python技能树征题
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仅需9道题轻松掌握Python Web应用开发 | Python技能树征题
0. 前言
使用 Python Web 框架构建 Web 应用可以使我们专注于应用程序的核心逻辑，而不必处理低级细节(例如，协议、套接字或进程和线程管理等)，因此使用 Python 构建 Web 应用比较简单，我们就通过 8 道 Python 编程题来解决 Python Web 应用开发的相关问题吧！
1. 第 1 题：客户端访问 Web 服务器
知识点描述：客户端与 Web 服务器进行交互，以获取应用服务。
问题描述：向 Web 服务发送一个带有查询参数的 HTTP GET 请求，请从以下选项中选出你认为正确的选项：
A.
import requests
from urllib import parse
url = "https://www.python.org/search/"
params = {'q': 'list'}
query = parse.urlencode(params)
response = requests.urlopen(url+'?'+query)
print(response.read())
B.
import requests
from urllib import parse
url = "https://www.python.org/search/"
params = {'q': 'list'}
query = parse.urlencode(params)
response = requests.get(url+'?'+query)
print(response.text)
C.
import requests
from urllib import parse
url = "https://www.python.org/search/"
params = {'q': 'list'}
query = parse.urlencode(params)
response = requests.get(url+query)
print(response.text)
D.
from urllib import parse, request
url = "https://www.python.org/search/"
params = {'q': 'list'}
query = parse.urlencode(params)
response = request.get(url+'?'+query)
print(response.read())
正确答案： B
2. 第 2 题：构建 TCP 服务器
知识点描述：构建 TCP 服务器，通过 TCP 协议和客户端通信。
问题描述：编写程序创建一个简单 TCP 应答服务器，请从以下选项中选出你认为正确的程序：
A.
from socketserver import BaseRequestHandler, TCPServer
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
self.request.send("Success")
if __name__ == "__main__":
server = MessageHandler(('', 5000), TCPServer)
server.serve_forever()
B.
from socketserver import BaseRequestHandler, TCPServer
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
self.request.send("Success")
if __name__ == "__main__":
server = TCPServer(('', 5000), MessageHandler)
C.
from socketserver import BaseRequestHandler, TCPServer
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
self.request.send("Success")
if __name__ == "__main__":
server = MessageHandler()
server.serve_forever()
D.
from socketserver import BaseRequestHandler, TCPServer
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
self.request.send("Success")
if __name__ == "__main__":
server = TCPServer(('', 5000), MessageHandler)
server.serve_forever()
正确答案： D
3. 第 3 题：构建 UDP 服务器
知识点描述：构建 UDP 服务器，通过 UDP 协议和客户端通信。
问题描述：编写程序创建一个简单 UDP 应答服务器，请从以下选项中选出你认为正确的程序：
A.
from socketserver import BaseRequestHandler, UDPServer
from datetime import datetime
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
response = (str(datetime.today()) + ': SUCCESS!')
self.request.send(response)
if __name__ == "__main__":
server = UDPServer(('', 5000), MessageHandler)
server.serve_forever()
B.
from socketserver import BaseRequestHandler, UDPServer
from datetime import datetime
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
while True:
message = self.request.recv(2048)
if not message:
break
else:
response = (str(datetime.today()) + ': SUCCESS!')
self.request.sendto(response)
if __name__ == "__main__":
server = UDPServer(('', 5000), MessageHandler)
server.serve_forever()
C.
from socketserver import BaseRequestHandler, UDPServer
from datetime import datetime
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
message, sock = self.request
response = (str(datetime.today()) + ': SUCCESS!')
sock.sendto(response.encode('ascii'), self.client_address)
if __name__ == "__main__":
server = UDPServer(('', 5000), MessageHandler)
server.serve_forever()
D.
from socketserver import BaseRequestHandler, UDPServer
from datetime import datetime
class MessageHandler(BaseRequestHandler):
def handle(self):
print("Get connection from {}".format(self.client_address))
message, sock = self.request
response = (str(datetime.today()) + ': SUCCESS!')
sock.send(response.encode('ascii'), self.client_address)
if __name__ == "__main__":
server = UDPServer(('', 5000), MessageHandler)
server.serve_forever()
正确答案： C
4. 第 4 题：构建 REST 接口
知识点描述：使用 REST 接口通过网络远程控制或访问 Web 应用程序。
问题描述：构建一个标准的 REST 风格的 Web API，请从以下选项中选出你认为正确的选项：
A.
import cgi
from datetime import datetime
def not_found(environ, start_response):
start_response('404 Not Found', [('Content-Type', 'text/plain')])
return ['Not Found']
class Route:
def __init__(self):
self.route = {}
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
params = cgi.FieldStorage(environ['wsgi.input'], environ=environ)
method = environ['REQUEST_METHOD'].lower()
environ['params'] = {k: params.getvalue(k) for k in params}
handler = self.route.get((method, path), not_found)
return handler(environ, start_response)
def register(self, method, path, function):
self.route[method.lower(), path] = function
return function
_hello_user = """
<html>
<head>
<title>Hello {user}</title>
</head>
<body>
<h1>{con_time}: Hello {user}!</h1>
</body>
</html>
"""
def hello_user(environ, start_response):
start_response('200 OK', [('Content-type', 'text/html')])
params = environ['params']
response = _hello_user.format(user=params.get('user'), con_time=datetime.now())
yield response.encode('utf-8')
if __name__ == '__main__':
from wsgiref.simple_server import make_server
route = Route()
route.register('GET', '/hello', hello_user)
httpd = make_server('', 8080, route)
print('Running on 8080')
httpd.serve_forever()
B.
import cgi
from datetime import datetime
def not_found(environ, start_response):
start_response('404 Not Found', [('Content-Type', 'text/plain')])
return [b'Not Found']
class Route:
def __init__(self):
self.route = {}
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
params = cgi.FieldStorage(environ['wsgi.input'], environ=environ)
method = environ['REQUEST_METHOD'].lower()
environ['params'] = {k: params.getvalue(k) for k in params}
handler = self.route.get((method, path), not_found)
return handler(environ, start_response)
def register(self, method, path, function):
self.route[method.lower(), path] = function
return function
_hello_user = """
<html>
<head>
<title>Hello {user}</title>
</head>
<body>
<h1>{con_time}: Hello {user}!</h1>
</body>
</html>
"""
def hello_user(environ, start_response):
start_response('200 OK', [('Content-type', 'text/html')])
params = environ['params']
response = _hello_user.format(user=params.get('user'), con_time=datetime.now())
yield response.encode('utf-8')
if __name__ == '__main__':
from wsgiref.simple_server import make_server
route = Route()
route.register('/hello', hello_user)
httpd = make_server('', 8080, route)
print('Running on 8080')
httpd.serve_forever()
C.
import cgi
from datetime import datetime
def not_found(environ, start_response):
start_response('404 Not Found', [('Content-Type', 'text/plain')])
return [b'Not Found']
class Route:
def __init__(self):
self.route = {}
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
params = cgi.FieldStorage(environ['wsgi.input'], environ=environ)
method = environ['REQUEST_METHOD'].lower()
environ['params'] = {k: params.getvalue(k) for k in params}
handler = self.route.get((method, path), not_found)
return handler(environ, start_response)
def register(self, method, path, function):
function = self.route[method.lower(), path]
return function
_hello_user = """
<html>
<head>
<title>Hello {user}</title>
</head>
<body>
<h1>{con_time}: Hello {user}!</h1>
</body>
</html>
"""
def hello_user(environ, start_response):
start_response('200 OK', [('Content-type', 'text/html')])
params = environ['params']
response = _hello_user.format(user=params.get('user'), con_time=datetime.now())
yield response.encode('utf-8')
if __name__ == '__main__':
from wsgiref.simple_server import make_server
route = Route()
route.register('GET', '/hello', hello_user)
httpd = make_server('', 8080, route)
print('Running on 8080')
httpd.serve_forever()
D.
import cgi
from datetime import datetime
def not_found(environ, start_response):
start_response('404 Not Found', [('Content-Type', 'text/plain')])
return [b'Not Found']
class Route:
def __init__(self):
self.route = {}
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
params = cgi.FieldStorage(environ['wsgi.input'], environ=environ)
method = environ['REQUEST_METHOD'].lower()
environ['params'] = {k: params.getvalue(k) for k in params}
handler = self.route.get((method, path), not_found)
return handler(environ, start_response)
def register(self, method, path, function):
self.route[method.lower(), path] = function
return function
_hello_user = """
<html>
<head>
<title>Hello {user}</title>
</head>
<body>
<h1>{con_time}: Hello {user}!</h1>
</body>
</html>
"""
def hello_user(environ, start_response):
start_response('200 OK', [('Content-type', 'text/html')])
params = environ['params']
response = _hello_user.format(user=params.get('user'), con_time=datetime.now())
yield response.encode('utf-8')
if __name__ == '__main__':
from wsgiref.simple_server import make_server
route = Route()
route.register('GET', '/hello', hello_user)
httpd = make_server('', 8080, route)
print('Running on 8080')
httpd.serve_forever()
正确答案： D
5. 第 5 题：客户端认证以上是关于仅需8道题轻松掌握Python Web应用开发 | Python技能树征题的主要内容，如果未能解决你的问题，请参考以下文章
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