Question

当我运行找到链接的应用程序时，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。

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by_name代码是：

def by_name(cls, name):
    u = Articles.all().filter("name =", name).get()
    return u

Answer 1

当堆栈跟踪的最后一行显示时，它首先尝试将值转换为unicode，然后将其编码为utf-8。但是，（隐式）转换使用ascii，这对于您的字符串是不够的。在将其传递给filter之前，您可以尝试使用正确的编码将其转换为unicode。例如：

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，则需要指定decode电话中的那个

gae python ascii编解码器无法解码字节

1 个答案: