Python 新手构建他的第一个 web 应用程序的旅程（应用程序链接：http ://contractpy.appspot.com/ - 这只是一个实验性应用程序）。
根据stackoverflow 用户的建议，我开始使用模板系统：Jinja2（我使用的是 Python 2.6），但现在我遇到了这个错误：
2012-06-17 11:44:39 Running command: "['C:\\Python26\\pythonw.exe', 'C:\\Program Files (x86)\\Google\\google_appengine\\dev_appserver.py', '--admin_console_server=', '--port=8084', 'C:\\Users\\CG\\Documents\\udacity\\contract']"
Warning: You are using a Python runtime (2.6) that is older than the production runtime environment (2.7). Your application may be dependent on Python behaviors that have changed and may not work correctly when deployed to production.
WARNING 2012-06-17 14:44:41,993 datastore_file_stub.py:518] Could not read datastore data from c:\users\cg\appdata\local\temp\dev_appserver.datastore
WARNING 2012-06-17 14:44:42,005 dev_appserver.py:3401] Could not initialize images API; you are likely missing the Python "PIL" module. ImportError: No module named _imaging
INFO 2012-06-17 14:44:42,025 dev_appserver_multiprocess.py:647] Running application dev~contractpy on port 8084: http://localhost:8084
INFO 2012-06-17 14:44:42,025 dev_appserver_multiprocess.py:649] Admin console is available at: http://localhost:8084/_ah/admin
WARNING 2012-06-17 14:44:47,171 py_zipimport.py:139] Can't open zipfile C:\Python26\lib\site-packages\setuptools-0.6c11-py2.6.egg-info: IOError: [Errno 13] file not accessible: 'C:\\Python26\\lib\\site-packages\\setuptools-0.6c11-py2.6.egg-info'
ERROR 2012-06-17 14:44:47,674 wsgi.py:189]
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 187, in Handle
handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 225, in _LoadHandler
handler = __import__(path[0])
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1858, in load_module
return self.FindAndLoadModule(submodule, fullname, search_path)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule
description)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted
description)
File "C:\Users\CG\Documents\udacity\contract\main.py", line 60, in <module>
class MainHandler(webapp2.RequestHandler):
File "C:\Users\CG\Documents\udacity\contract\main.py", line 71, in MainHandler
template = jinja_environment.get_template('index.html')
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 719, in get_template
return self._load_template(name, self.make_globals(globals))
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 693, in _load_template
template = self.loader.load(self, name, globals)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 115, in load
source, filename, uptodate = self.get_source(environment, name)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 169, in get_source
contents = f.read().decode(self.encoding)
File "C:\Python26\lib\encodings\utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x96 in position 3403: unexpected code byte
INFO 2012-06-17 14:44:47,713 dev_appserver.py:2891] "GET / HTTP/1.1" 500 -
INFO 2012-06-17 14:44:47,801 dev_appserver.py:2891] "GET /favicon.ico HTTP/1.1" 200 -
ERROR 2012-06-17 14:52:18,345 wsgi.py:189]
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 187, in Handle
handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 225, in _LoadHandler
handler = __import__(path[0])
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1858, in load_module
return self.FindAndLoadModule(submodule, fullname, search_path)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule
description)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate
return func(self, *args, **kwargs)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted
description)
File "C:\Users\CG\Documents\udacity\contract\main.py", line 60, in <module>
class MainHandler(webapp2.RequestHandler):
File "C:\Users\CG\Documents\udacity\contract\main.py", line 71, in MainHandler
template = jinja_environment.get_template('index.html')
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 719, in get_template
return self._load_template(name, self.make_globals(globals))
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 693, in _load_template
template = self.loader.load(self, name, globals)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 115, in load
source, filename, uptodate = self.get_source(environment, name)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 169, in get_source
contents = f.read().decode(self.encoding)
File "C:\Python26\lib\encodings\utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x96 in position 3403: unexpected code byte
INFO 2012-06-17 14:52:18,378 dev_appserver.py:2891] "GET / HTTP/1.1" 500 -
INFO 2012-06-17 14:52:18,470 dev_appserver.py:2891] "GET /favicon.ico HTTP/1.1" 200 -
我正在使用 PyScripter，它设置为 utf-8 编码：
我在 stackoverflow 上进行了搜索，发现了很多问题，但我不明白我的情况出了什么问题以及如何解决它。
提前感谢您的帮助！
这是我的代码：
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-
#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
import webapp2
import jinja2
jinja_environment = jinja2.Environment(autoescape=True,
loader=jinja2.FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates')))
import re
USER_RE = re.compile(r"^[a-zA-Z0-9_-]{3,20}$")
def valid_resident(resident):
return USER_RE.match(resident)
PASS_RE = re.compile(r"^.{3,20}$")
def valid_SSN(SSN):
return PASS_RE.match(SSN)
EMAIL_RE = re.compile(r"^[\S]+@[\S]+\.[\S]+$")
def valid_email(email):
return EMAIL_RE.match(email)
def escape_html(s):
for (i,o) in (("&","&"), (">",">"), ("<","<"), ('"','"')):
s = s.replace(i,o)
return s
import time
import datetime
def dateToday():
today = datetime.datetime.today()
todayDay = str(today.day)
todayMonth = str(today.month)
monthExt = {'1':' January ', '2':'February', '3':' March ', '4':'April', '5':'May', '6':'June', '7 ':' July ', '8':'August', '9':'September', '10':'October', '11':'November ', '12':'December'}
todayYear = str(today.year)
return(todayDay + ' of ' + monthExtenso[todaymonth] + ' of ' + todayYear)
class MainHandler(webapp2.RequestHandler):
def get(self):
template_values = {"resident": "",
"SSN": "",
"driverLicense": "",
"email":"",
"resident_error": "",
"SSN_error": "",
"driverLicense_error": "",
"email_error": ""}
template = jinja_environment.get_template('index.html')
self.response.out.write(template.render(template_values))
def write_form(self, text_write):
self.response.out.write(text_write)
def post(self):
resident_name = self.request.get(escape_html("resident"))
user_nacionality = self.request.get("nacionality")
user_SSN = self.request.get(escape_html('SSN'))
user_email = self.request.get(escape_html('email'))
user_driverLicense = self.request.get(escape_html('driverLicense'))
resident_error = ""
SSN_error = ""
driverLicense_error = ""
contract_type = self.request.get("contractType")
owner = self.request.get("owner")
witness = self.request.get("witness ")
if (resident_name and valid_resident(resident_name)) \
and (user_SSN and valid_SSN(user_SSN)) \
and ((not user_email) or (user_email and valid_email(user_email))):
self.redirect('/yourcontract?resident=%s&nacionality=%s&SSN=%s&driverLicense=%s&email=%s&witness=%s&owner=%s' % (resident_name, user_nacionality, user_SSN, user_driverLicense, user_email,
witness, owner))
else:
if not valid_resident(resident_name):
resident_error = "Oh no!!! this resident name isn't valid!"
if not valid_SSN(user_SSN):
SSN_error = "Oh no!!! SSN isn't valid!"
if user_email and not valid_email(user_email):
email_error = "Oh no!!! e-mail isn't valid!"
self.write_form(form % {"resident":resident_name,
"resident_error":resident_error,
"SSN":user_SSN,
"SSN_error":SSN_error,
"driverLicense":user_driverLicense,
"email":user_email,
})
class yourcontractHandler(webapp2.RequestHandler):
def get(self):
geted_resident_name = self.request.get('resident')
geted_user_nacionality = self.request.get("nacionality")
geted_user_SSN = self.request.get('SSN')
geted_user_email = self.request.get('email')
geted_user_driverLicense = self.request.get('driverLicense')
geted_resident_error = ""
geted_SSN_error = ""
geted_driverLicense_error = ""
#geted_contract_type = self.request.get("contractType")
geted_owner = self.request.get("owner")
geted_witness = self.request.get("witness")
geted_contractType = self.request.get("contractType")
self.response.out.write(yourcontract % {"resident":geted_resident_name,
"nacionality":geted_user_nacionality,
"SSN":geted_user_SSN,
"SSN_error":geted_SSN_error,
"driverLicense":geted_user_driverLicense,
"email":geted_user_email,
"witness ":geted_witness ,
"owner":geted_owner,
"contractType":geted_contractType
})
app = webapp2.WSGIApplication([('/', MainHandler), ('/yourcontract', yourcontractHandler)],
debug=True)
这是我的模板代码：
<!DOCTYPE html>
<html>
<head>
<title>Contract with Python</title>
<style type="text/css">
.label {text-align: right}
.error {color: red}
</style>
</head>
<body>
<h2>Contract with Python</h2>
<form method="post">
<table>
<tr>
<td class="label">
resident
</td>
<td>
<input type="text" name="resident"
value= "%(resident)s">
</td>
<td class="error">
%(resident_error)s
</td>
</tr>
<tr>
<td class="label">
nacionality
</td>
<td>
<input type="text"
name="nacionality" value= " ">
</td>
</tr>
<tr>
<td class="label">
License
</td>
<td>
<input type="text"
name="driverLicense" value="">
</td>
</tr>
<tr>
<td class="label">
SSN
</td>
<td>
<input type="text" name="SSN"
value="%(SSN)s">
</td>
<td class="error"> %(SSN_error)s
</td>
</tr>
<tr>
<td class="label">
Email (optional)
</td>
<td>
<input type="text" name="email"
value="%(email)s">
</td>
<td class="error"> %(email_error)s
</td>
</tr>
</table>
<br>
<td class="label">
Contract Type
<select name = "contractType">
<option>House Rental
Contract</option>
<option>Car Rental
Contract</option>
<option>Other</option>
</select>
</td>
<br>
<br>
<br>
owner
<select name = "owner">
<option>House owner</option>
<option>Car owner</option>
<option>Other owner</option>
</select>
<br>
<br>
<br>
Witness
<select name = "witness">
<option>Carl Sagan</option>
<option>Mahatma Gandhi</option>
</select>
<br>
<br>
<input type="submit">
</form>
</body>
</html>
"""
yourcontract = """
<html>
<head>
<title>Unit 2 Signup</title>
</head>
<body>
{{contractType}}
In consideration of the agreements of the
Resident(s), known as: {{resident}} The owner
hereby rents them the dwelling located at
{{residentAdress}}, for the period commencing
on the {{dateStarts}}, and monthly thereafter
until the last day of {{dateEnds}}, at which
time this Agreement is terminated. Resident
(s), in consideration of owners permitting
them to occupy the above property, hereby
agrees to the following terms:
RENT: To pay as rental the sum of $
{{rentalSum}} per month, due and payable in
advance from the first day of every month.
Failure to pay rent when due will result in
the owner taking immediate legal action to
evict the Resident from the premises and seize
the security deposit.
LATE FEE: Rent received after the first of the
month will be subject to a late fee of 10%
plus (3.00) dollars per day.
ACCEPTED THIS {{dateContract}}, at
{{localContract}}.
______________________________________________
_____
{{resident}} - Resident
______________________________________________
_____
{{owner}} – owner
______________________________________________
_____
{{witness}} – Witness
</body>
</html>