gae python ascii编解码器无法解码字节 [英] gae python ascii codec cant decode byte
问题描述
当我运行找到链接的应用程序时,它检查它们是否存在于数据库中,并将它们添加到数据库中,我收到错误消息。
When I run my application, which finds links, checks if they exist in the database, and adds them to the database, I get an error.
Traceback (most recent call last):
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1536, in __call__
rv = self.handle_exception(request, response, e)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
rv = self.router.dispatch(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
return handler.dispatch()
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "/base/data/home/apps/s~nothing-but-net/1.360769209191920043/main.py", line 460, in get
blchrlinks(True, a)
File "/base/data/home/apps/s~nothing-but-net/1.360769209191920043/main.py", line 271, in blchrlinks
if Articles.by_name(title):
File "/base/data/home/apps/s~nothing-but-net/1.360769209191920043/main.py", line 498, in by_name
u = Articles.all().filter("name =", name).get()
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2099, in get
results = self.run(limit=1, **kwargs)
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2063, in run
iterator = raw_query.Run(**kwargs)
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore.py", line 1622, in Run
itr = Iterator(self.GetBatcher(config=config))
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore.py", line 1601, in GetBatcher
return self.GetQuery().run(_GetConnection(), query_options)
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore.py", line 1490, in GetQuery
filter_predicate=self.GetFilterPredicate(),
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore.py", line 1534, in GetFilterPredicate
property_filters.append(datastore_query.make_filter(name, op, values))
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/datastore/datastore_query.py", line 107, in make_filter
properties = datastore_types.ToPropertyPb(name, values)
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore_types.py", line 1745, in ToPropertyPb
pbvalue = pack_prop(name, v, pb.mutable_value())
File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/datastore_types.py", line 1556, in PackString
pbvalue.set_stringvalue(unicode(value).encode('utf-8'))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 57: ordinal not in range(128)
我的代码是by_name:
My code for by_name is:
def by_name(cls, name):
u = Articles.all().filter("name =", name).get()
return u
推荐答案
堆栈跟踪的最后一行显示,它试图首先将该值转换为unicode,然后将其编码为utf-8。但是,(隐式)转换使用ascii,这对于您的字符串不够。在将它传递给 filter
之前,您可以尝试使用正确的编码将其转换为unicode。例如:
As the last line of the stack trace shows, it's trying to convert the value to unicode first and then encoding it as utf-8. However, the (implicit) conversion is using ascii, which is not enough for your string. You could try converting it to unicode yourself, using the right encoding, before passing it to filter
. Example:
u = Articles.all().filter("name =", name.decode('utf-8')).get()
(请记住,您需要提供正确的编码;如果 name
不是UTF-8字符串,而是Cp1252,ISO-Latin或其他内容,则需要在解码
呼叫)
(remember that you need to provide the correct encoding; if name
is not a UTF-8 string, but a Cp1252, ISO-Latin or something else, you need to specify that in the decode
call)
这篇关于gae python ascii编解码器无法解码字节的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!