[英]Rot13 Example: How do I run this piece code in Google App Engine?
我在運行下面的代碼時遇到問題。
代碼應該可以工作(這是針對問題集的Udacity源代碼解決方案)。 它應在Google App Engine上運行。
在我的終端中,我導航到hw2文件夾,該文件夾包含〜/ python-docs-samples / appengine / standard中的以下文件
然后我跑
dev_appserver.py .
但是,我在localhost:8080加載頁面時收到404錯誤
它適合〜/ python-docs-samples / appengine / standard中的“ Hello World”示例
我在這里做錯了什么? 謝謝
import os
import re
from string import letters
import webapp2
import jinja2
from google.appengine.ext import db
template_dir = os.path.join(os.path.dirname(__file__), 'templates')
jinja_env = jinja2.Environment(loader = jinja2.FileSystemLoader(template_dir),
autoescape = True)
def render_str(template, **params):
t = jinja_env.get_template(template)
return t.render(params)
class BaseHandler(webapp2.RequestHandler):
def render(self, template, **kw):
self.response.out.write(render_str(template, **kw))
def write(self, *a, **kw):
self.response.out.write(*a, **kw)
class Rot13(BaseHandler):
def get(self):
self.render('rot13-form.html')
def post(self):
rot13 = ''
text = self.request.get('text')
if text:
rot13 = text.encode('rot13')
self.render('rot13-form.html', text = rot13)
USER_RE = re.compile(r"^[a-zA-Z0-9_-]{3,20}$")
def valid_username(username):
return username and USER_RE.match(username)
PASS_RE = re.compile(r"^.{3,20}$")
def valid_password(password):
return password and PASS_RE.match(password)
EMAIL_RE = re.compile(r'^[\S]+@[\S]+\.[\S]+$')
def valid_email(email):
return not email or EMAIL_RE.match(email)
class Signup(BaseHandler):
def get(self):
self.render("signup-form.html")
def post(self):
have_error = False
username = self.request.get('username')
password = self.request.get('password')
verify = self.request.get('verify')
email = self.request.get('email')
params = dict(username = username,
email = email)
if not valid_username(username):
params['error_username'] = "That's not a valid username."
have_error = True
if not valid_password(password):
params['error_password'] = "That wasn't a valid password."
have_error = True
elif password != verify:
params['error_verify'] = "Your passwords didn't match."
have_error = True
if not valid_email(email):
params['error_email'] = "That's not a valid email."
have_error = True
if have_error:
self.render('signup-form.html', **params)
else:
self.redirect('/unit2/welcome?username=' + username)
class Welcome(BaseHandler):
def get(self):
username = self.request.get('username')
if valid_username(username):
self.render('welcome.html', username = username)
else:
self.redirect('/unit2/signup')
app = webapp2.WSGIApplication([('/unit2/rot13', Rot13),
('/unit2/signup', Signup),
('/unit2/welcome', Welcome)],
debug=True)
以下代碼定義了相應URL模式的請求處理程序:
app = webapp2.WSGIApplication([('/unit2/rot13', Rot13),
('/unit2/signup', Signup),
('/unit2/welcome', Welcome)],
debug=True)
請注意,您沒有/
或全部捕獲的處理程序。 這就是為什么您會收到HTTP 404
錯誤的原因。
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