我正在尝试使用 Python 在 Google App Engine 中编写我的第一个应用程序。这里是应用程序的链接：http: //contractpy.appspot.com/ - 它只是一个实验性应用程序。整个代码如下。
但我收到此错误（显示在日志上）：
(...) line 229, in post "owner":owner})
TypeError: not enough arguments for format string
第 229 行在这个 if 块中：
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('/welcome?resident=%s&nacionality=%s?SSN=%s?driverLicense=%s?email=%s?witness =%s?owner=%s' % {"resident":resident_name,
"nacionality":user_nacionality,
"SSN":user_SSN,
"driverLicense":user_driverLicense,
"email":user_email,
"witness ":witness ,
"owner":owner})
更具体地说，就是这一行：
"owner":owner})
我试图进行更改，阅读类似的 awnswers，但没有任何效果。有人可以找出导致此错误的原因吗？提前感谢您的帮助！
# -*- 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 webapp2
form = """
<html>
<head>
<title>Sign Up</title>
<style type="text/css">
.label {text-align: right}
.error {color: red}
</style>
</head>
<body>
<h2>Signup</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>
"""
welcome = """
<html>
<head>
<title>Unit 2 Signup</title>
</head>
<body>
%(contractType)s
In consideration of the agreements of the Resident(s), known as: %(resident)s The owner hereby rents them the dwelling located at %(residentAdress)s, for the period commencing on the %(dateStarts)s, and monthly thereafter until the last day of %(dateEnds)s, 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)s - Resident
___________________________________________________
%(owner)s – owner
___________________________________________________
%(witness)s – Witness
</body>
</html>
"""
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):
self.response.out.write(form %{"resident": "",
"SSN": "",
"driverLicense": "",
"email":"",
"resident_error": "",
"SSN_error": "",
"driverLicense_error": "",
"email_error": ""})
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('/welcome?resident=%s&nacionality=%s?SSN=%s?driverLicense=%s?email=%s?witness =%s?owner=%s' % {"resident":resident_name,
"nacionality":user_nacionality,
"SSN":user_SSN,
"driverLicense":user_driverLicense,
"email":user_email,
"witness":witness,
"owner":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 WelcomeHandler(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 ")
self.response.out.write(welcome % {"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,
})
app = webapp2.WSGIApplication([('/', MainHandler), ('/welcome', WelcomeHandler)],
debug=True)