关于python：/ context上的Django 1.11 TypeError必须是dict而不是unicode

Django 1.11 TypeError at / context must be a dict rather than unicode

我使用django 1.11创建一个网站。当我运行本地主机http://127.0.0.1:8000/时，出现错误"typeerror at/上下文必须是dict而不是unicode。"我不知道怎么修。

有问题的行：venvlibsite packagesdjango emplatecontext.py in make_context，第287行

全景上下文代码.py进口警告从ContextLib导入ContextManager从副本导入副本

从django.utils.deprecation import removedindjango20警告

硬编码处理器，便于使用CSRF保护。

_内置的_context_processors=('django.template.context_processors.csrf'，)

类ContextPopException(异常)："pop()被调用的次数多于push()"通过

类ContextDict(dict)：def init(self、context、*args、**kwargs)：super(contextdict，self).init(*args，**kwargs)

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context.dicts.append(self)
self.context = context

def __enter__(self):
return self

def __exit__(self, *args, **kwargs):
self.context.pop()

类BaseContext(对象)：def init(self，dict_uu=none)：自我重置听写(dict)

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def _reset_dicts(self, value=None):
builtins = {'True': True, 'False': False, 'None': None}
self.dicts = [builtins]
if value is not None:
self.dicts.append(value)

def __copy__(self):
duplicate = copy(super(BaseContext, self))
duplicate.dicts = self.dicts[:]
return duplicate

def __repr__(self):
return repr(self.dicts)

def __iter__(self):
for d in reversed(self.dicts):
yield d

def push(self, *args, **kwargs):
dicts = []
for d in args:
if isinstance(d, BaseContext):
dicts += d.dicts[1:]
else:
dicts.append(d)
return ContextDict(self, *dicts, **kwargs)

def pop(self):
if len(self.dicts) == 1:
raise ContextPopException
return self.dicts.pop()

def __setitem__(self, key, value):
"Set a variable in the current context"
self.dicts[-1][key] = value

def set_upward(self, key, value):
"""
Set a variable in one of the higher contexts if it exists there,
otherwise in the current context.
"""
context = self.dicts[-1]
for d in reversed(self.dicts):
if key in d.keys():
context = d
break
context[key] = value

def __getitem__(self, key):
"Get a variable's value, starting at the current context and going upward"
for d in reversed(self.dicts):
if key in d:
return d[key]
raise KeyError(key)

def __delitem__(self, key):
"Delete a variable from the current context"
del self.dicts[-1][key]

def has_key(self, key):
warnings.warn(
"%s.has_key() is deprecated in favor of the 'in' operator." % self.__class__.__name__,
RemovedInDjango20Warning
)
return key in self

def __contains__(self, key):
for d in self.dicts:
if key in d:
return True
return False

def get(self, key, otherwise=None):
for d in reversed(self.dicts):
if key in d:
return d[key]
return otherwise

def setdefault(self, key, default=None):
try:
return self[key]
except KeyError:
self[key] = default
return default

def new(self, values=None):
"""
Returns a new context with the same properties, but with only the
values given in 'values' stored.
"""
new_context = copy(self)
new_context._reset_dicts(values)
return new_context

def flatten(self):
"""
Returns self.dicts as one dictionary
"""
flat = {}
for d in self.dicts:
flat.update(d)
return flat

def __eq__(self, other):
"""
Compares two contexts by comparing theirs 'dicts' attributes.
"""
if isinstance(other, BaseContext):
# because dictionaries can be put in different order
# we have to flatten them like in templates
return self.flatten() == other.flatten()

# if it's not comparable return false
return False

类上下文(baseContext)："变量上下文的堆栈容器"def init(self，dict_u=none，autoescape=true，use_l10n=none，use_tz=none)：self.autoescape=自动退出self.use_l10n=使用_l10nself.use_tz=使用self.template_name="未知"self.render_context=renderContext()。#设置为原始模板——而不是扩展或包含的模板#模板——在渲染过程中，请参见绑定模板。self.template=无super(上下文，self).init(dict_uuu)

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@contextmanager
def bind_template(self, template):
if self.template is not None:
raise RuntimeError("Context is already bound to a template")
self.template = template
try:
yield
finally:
self.template = None

def __copy__(self):
duplicate = super(Context, self).__copy__()
duplicate.render_context = copy(self.render_context)
return duplicate

def update(self, other_dict):
"Pushes other_dict to the stack of dictionaries in the Context"
if not hasattr(other_dict, '__getitem__'):
raise TypeError('other_dict must be a mapping (dictionary-like) object.')
if isinstance(other_dict, BaseContext):
other_dict = other_dict.dicts[1:].pop()
return ContextDict(self, other_dict)

类renderContext(baseContext)："用于存储模板状态的堆栈容器。

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RenderContext simplifies the implementation of template Nodes by providing a
safe place to store state between invocations of a node's `render` method.

The RenderContext also provides scoping rules that are more sensible for
'template local' variables. The render context stack is pushed before each
template is rendered, creating a fresh scope with nothing in it. Name
resolution fails if a variable is not found at the top of the RequestContext
stack. Thus, variables are local to a specific template and don't affect the
rendering of other templates as they would if they were stored in the normal
template context.
"""
template = None

def __iter__(self):
for d in self.dicts[-1]:
yield d

def __contains__(self, key):
return key in self.dicts[-1]

def get(self, key, otherwise=None):
return self.dicts[-1].get(key, otherwise)

def __getitem__(self, key):
return self.dicts[-1][key]

@contextmanager
def push_state(self, template, isolated_context=True):
initial = self.template
self.template = template
if isolated_context:
self.push()
try:
yield
finally:
self.template = initial
if isolated_context:
self.pop()

类RequestContext(上下文)："template.context的这个子类使用在引擎配置中定义的处理器。可以将其他处理器指定为可调用文件列表使用"processors"关键字参数。"def init(self，request，dict_=none，processors=none，use_l10n=none，use_tz=none，autoescape=true)：super(requestContext，self).init(dict_u，use_l10n=使用_l10n，use_tz=使用_tz，autoescape=自动退出)self.request=请求self.u processors=(如果处理器不是其他元组(处理器))。self._processors_index=len(self.dicts)

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# placeholder for context processors output
self.update({})

# empty dict for any new modifications
# (so that context processors don't overwrite them)
self.update({})

@contextmanager
def bind_template(self, template):
if self.template is not None:
raise RuntimeError("Context is already bound to a template")

self.template = template
# Set context processors according to the template engine's settings.
processors = (template.engine.template_context_processors +
self._processors)
updates = {}
for processor in processors:
updates.update(processor(self.request))
self.dicts[self._processors_index] = updates

try:
yield
finally:
self.template = None
# Unset context processors.
self.dicts[self._processors_index] = {}

def new(self, values=None):
new_context = super(RequestContext, self).new(values)
# This is for backwards-compatibility: RequestContexts created via
# Context.new don't include values from context processors.
if hasattr(new_context, '_processors_index'):
del new_context._processors_index
return new_context

def make_context(上下文，请求=无，**kwargs)："从普通的dict和可选的httpRequest创建合适的上下文。"如果context不是none，也不是isinstance(context，dict)：raise typeerror('context必须是dict而不是%s.'%context.class.name)//287如果请求为无：context=context(context，**kwargs)其他：#需要以下模式来确保#上下文重写模板上下文处理器中的那些。原始上下文=上下文context=requestContext(请求，**kwargs)如果原始上下文：context.push(原始上下文)返回上下文