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社区首页 >问答首页 >Jinja2安装问题

问Jinja2安装问题
EN

Stack Overflow用户
提问于 2016-05-14 13:48:51
回答 1查看 202关注 0票数 0

在我的html模板中尝试{% set foo = 42 %}时，我将收到以下错误消息。当不使用set时，模板可以正常工作。

代码语言：javascript
复制
TemplateSyntaxError: Invalid block tag: 'set', expected 'endblock' or 'endblock content'

下面，我按照评论中的建议，添加了整个会议日志。

代码语言：javascript
复制
*** Running dev_appserver with the following flags:
    --skip_sdk_update_check=yes --port=15093 --admin_port=8018
Python command: /usr/bin/python2.7
INFO     2016-05-14 18:36:26,513 devappserver2.py:762] Skipping SDK update check.
INFO     2016-05-14 18:36:26,696 api_server.py:204] Starting API server at: http://localhost:56265
INFO     2016-05-14 18:36:26,701 dispatcher.py:197] Starting module "default" running at: http://localhost:15093
INFO     2016-05-14 18:36:26,704 admin_server.py:118] Starting admin server at: http://localhost:8018
ERROR    2016-05-14 18:37:48,778 webapp2.py:1528] Invalid block tag: 'set', expected 'endblock' or 'endblock content'
Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1511, in __call__
    rv = self.handle_exception(request, response, e)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1505, in __call__
    rv = self.router.dispatch(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1077, in __call__
    return handler.dispatch()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 547, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 545, in dispatch
    return method(*args, **kwargs)
  File "/Users/brian/googleapps/lastturn/views.py", line 187, in get
    self.response.out.write(template.render(path, template_values))
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/webapp/template.py", line 91, in render
    t = _load_internal_django(template_path, debug)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/webapp/template.py", line 165, in _load_internal_django
    template = django.template.loader.get_template(file_name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader.py", line 160, in get_template
    template = get_template_from_string(template, origin, template_name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader.py", line 168, in get_template_from_string
    return Template(source, origin, name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 158, in __init__
    self.nodelist = compile_string(template_string, origin)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 186, in compile_string
    return parser.parse()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 281, in parse
    compiled_result = compile_func(self, token)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader_tags.py", line 195, in do_extends
    nodelist = parser.parse()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 281, in parse
    compiled_result = compile_func(self, token)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader_tags.py", line 173, in do_block
    nodelist = parser.parse(('endblock', 'endblock %s' % block_name))
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 279, in parse
    self.invalid_block_tag(token, command, parse_until)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 332, in invalid_block_tag
    raise self.error(token, "Invalid block tag: '%s', expected %s" % (command, get_text_list(["'%s'" % p for p in parse_until])))
TemplateSyntaxError: Invalid block tag: 'set', expected 'endblock' or 'endblock content'
ERROR    2016-05-14 18:37:48,784 wsgi.py:279] 
Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/runtime/wsgi.py", line 267, in Handle
    result = handler(dict(self._environ), self._StartResponse)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1519, in __call__
    response = self._internal_error(e)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1511, in __call__
    rv = self.handle_exception(request, response, e)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1505, in __call__
    rv = self.router.dispatch(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1077, in __call__
    return handler.dispatch()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 547, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 545, in dispatch
    return method(*args, **kwargs)
  File "/Users/brian/googleapps/lastturn/views.py", line 187, in get
    self.response.out.write(template.render(path, template_values))
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/webapp/template.py", line 91, in render
    t = _load_internal_django(template_path, debug)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/webapp/template.py", line 165, in _load_internal_django
    template = django.template.loader.get_template(file_name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader.py", line 160, in get_template
    template = get_template_from_string(template, origin, template_name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader.py", line 168, in get_template_from_string
    return Template(source, origin, name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 158, in __init__
    self.nodelist = compile_string(template_string, origin)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 186, in compile_string
    return parser.parse()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 281, in parse
    compiled_result = compile_func(self, token)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader_tags.py", line 195, in do_extends
    nodelist = parser.parse()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 281, in parse
    compiled_result = compile_func(self, token)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/loader_tags.py", line 173, in do_block
    nodelist = parser.parse(('endblock', 'endblock %s' % block_name))
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 279, in parse
    self.invalid_block_tag(token, command, parse_until)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/_internal/django/template/__init__.py", line 332, in invalid_block_tag
    raise self.error(token, "Invalid block tag: '%s', expected %s" % (command, get_text_list(["'%s'" % p for p in parse_until])))
TemplateSyntaxError: Invalid block tag: 'set', expected 'endblock' or 'endblock content'
INFO     2016-05-14 18:37:48,792 module.py:812] default: "GET / HTTP/1.1" 500 -

下面我增加了我对views.py所做的修改。注释掉的行指示原始的jinja2环境语句。这些修订是对在评论中提出的建议的回应。但是，我仍然收到同样的错误消息，这似乎表明jinja2没有被使用。

代码语言：javascript
复制
TEMPLATE_DIR = os.path.join(os.path.dirname(__file__), 'templates')
#jinja_environment = \
#jinja2.Environment(loader=jinja2.FileSystemLoader(TEMPLATE_DIR))

JINJA_ENVIRONMENT = jinja2.Environment(
    loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
    extensions=['jinja2.ext.autoescape'],
    autoescape=True)

class BaseHandler(webapp2.RequestHandler):

    @webapp2.cached_property
    def jinja2(self):
        return jinja2.get_jinja2(app=self.app)

    def render_template(
        self,
        filename,
        template_values,
        **template_args
        ):
#template = jinja_environment.get_template(filename)
    template = JINJA_ENVIRONMENT.get_template(filename)
        self.response.out.write(template.render(template_values))

下面是base.html模板。

代码语言：javascript
复制
<html>
  <head>
    <link rel="stylesheet" href="/static/css/reset.css">
    <link rel="stylesheet" href="/static/css/style.css">
  </head>
  <body>
    <div class="wrapper">
    {% block content %}
    {% endblock content %}
    </div>
  </body>
</html>

下面是实际模板的“心脏”。所谓“心”，我的意思是我忽略了这个肠子，因为这只是一个测试。

代码语言：javascript
复制
{% extends "base.html" %}
    {% block content %}
    <center>
        <h1>Create or edit your own Blog</h1>
      </center>
      {% set foo = 42 %}
      {{ foo }}

    {% endblock content %}

这个答案告诉我，jinja2没有被安装(是否正确？)。

我还需要更换安装的其他部分吗？

但是我使用的是google-app-engine，这可能是不同的。下面的清单确认安装了Jinja2 2.8。

代码语言：javascript
复制
server:~ brian$ pip freeze
Warning: cannot find svn location for setuptools===0.6c12dev-r85381
all==0.0.6
altgraph==0.7.1
atari-py==0.0.17
bdist-mpkg==0.4.4
bonjour-py==0.3
caller-module==0.0.9
Django==1.3.1
include-server===3.1-toolwhip.1
Jinja2==2.8
macholib==1.3
MarkupSafe==0.23
mod-python==3.3.1
modulegraph==0.8.1
numpy==1.11.0
PIL==1.1.7
Pillow==3.2.0
public==0.0.0
py2app==0.5.3
pyglet==1.2.4
pyobjc-core==2.3.2a0
pyobjc-framework-AddressBook==2.3.2a0

pyOpenSSL==0.12
PyRSS2Gen==1.0.0
python-dateutil==1.5
PyYAML==3.11
render==1.0.0
requests==2.9.1
six==1.10.0
Twisted==11.0.0
xattr==0.6.1
zope.interface==3.5.1
You are using pip version 8.1.1, however version 8.1.2 is available.
server:~ brian$
google-app-engine
jinja2
EN

回答 1

Stack Overflow用户

发布于 2016-05-15 19:11:02

在对我最初的问题做了很多的评论和回答之后，我终于回答了我的问题。我对webapp2和Jinja都有一个template.render()感到困惑，但它们是不同的。

来自webapp的template.render()似乎需要两个参数--路径和模板名--我的当前代码使用这种格式。但是，我想使用Jinja2，其中template.render()只需要一个参数--模板名。

根据在留言簿应用程序中使用Jinja的google文档，显示了以下格式。

代码语言：javascript
复制
JINJA_ENVIRONMENT = jinja2.Environment(
    loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
    extensions=['jinja2.ext.autoescape'],
    autoescape=True)

但是，这与我选择的BaseHandler类不太好，它将模板放在自己的子目录" templates“中。相反，我使用了以下代码，其中TEMPLATE_DIR在"loader=“语句中替换了文件。

代码语言：javascript
复制
TEMPLATE_DIR = os.path.join(os.path.dirname(__file__), 'templates')
JINJA_ENVIRONMENT = jinja2.Environment(
    loader=jinja2.FileSystemLoader(TEMPLATE_DIR ),
    extensions=['jinja2.ext.autoescape'],
    autoescape=True)

顺便说一句，我不再导入webapp template。我在我的"get def“中使用了下面的样式。

代码语言：javascript
复制
template = JINJA_ENVIRONMENT.get_template('index.html')
self.response.out.write(template.render( template_values))

因此，尽管问题是"Jinja安装问题“，但问题并不是安装问题，而是我很难将Jinja集成到我现有的目录结构中。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/37227450

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