蟒UnicodeDecodeError错误：“ASCII”编解码器不能解码的字节0xe2在范围序数不

2019-06-25 07:36发布

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我试着写我在谷歌App Engine的第一个应用程序与Python（应用程序的链接： http://contractpy.appspot.com/ -它只是一个实验性应用）。 整个代码是波纹管。

但是，当我提交了数据，我得到这个错误（显示在日志）： 

(...) line 265, in get "contractType":geted_contractType
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 949: ordinal not in range(128)

265线是在这个if块： 

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
                                      })

我试图做出改变，阅读类似awnswers（像这样或这样 ），但没有任何帮助。 我不能在这个代码什么错误弄清楚。 有人可以找出是什么原因造成这样的错误，以及如何解决它？

我使用Python 2.7。

在此先感谢您的帮助！ 

# -*- 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>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)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('/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)

Answer 1:

你真的应该使用合适的模板系统。 Jinja2的是包含在AppEngine上。

然而在此期间，你的问题是，你的模板是ASCII但你的数据不（不知道它是UTF-8或Unicode）。 简单的解决方法是前缀的每一个模板字符串与u ，使之统一。

但是，你真的应该使用合适的模板系统。



Answer 2:

在这里，你得到了解决。 

>>> "t".decode("utf-8")
u't'
>>> "\x81".decode("utf-8")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "encodings/utf_8.py", line 7799, in decode
UnicodeDecodeError: 'utf8' codec can't decode byte 0x81 in position 0: unexpected code byte

>>> "a\x81b".decode("utf-8", "replace")  # this will decode better and the right way.
u'a\ufffdb'


Answer 3:

在你的代码的顶端设置默认编码器

在appcfg.py驻留内部/google/appengine/tools/appcfg.py

上线73加

import sys
reload(sys)
sys.setdefaultencoding("ISO-8859-1")


文章来源: Python UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 ordinal not in range(128)
标签： python google-app-engine ascii asciiencoding
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