我试图使用Pygments和beautifulsoup作为我为googleappengine构建的博客软件的代码高亮解决方案。在
它的工作原理是我的HTML帖子将使用pre标记来识别代码。像这样:
<p>Check out this cool code example<p>
<pre class="python">
import this
def demo():
pass</pre>
BeautifulSoup
捕获pre
标记之间的部分并将其传递给Pygments。假设Pygments检查类值并应用正确的lexar。Pygments然后应用格式化并用格式化的文本替换原始文本。解决方案在SaltyCrane's Blog中有更详细的解释。在
也许我只是没有正确导入模块?在
from google.appengine.ext import db
import fix_path
import bs4
import pygments
from bs4 import BeautifulSoup
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter
def formatter(p):
soup = BeautifulSoup(p.otext)
preblocks = soup.findAll('pre')
for pre in preblocks:
if pre.has_key('class'):
code = ''.join([unicode(item) for item in pre.contents])
code = unescape_html(code)
lexer = lexers.get_lexer_by_name(pre['class'])
formatter = formatters.HtmlFormatter()
code_hl = highlight(code, lexer, formatter)
pre.replaceWith(BeautifulSoup(code_hl))
else:
print "No Go"
return unicode(soup)
Traceback (most recent call last):
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 1536, in __call__
rv = self.handle_exception(request, response, e)
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 1530, in __call__
rv = self.router.dispatch(request, response)
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\Users\john\webdev\google\lib\webapp2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "C:\Users\john\webdev\workspace\bsby\views.py", line 45, in post
p.ftext = utils.formatter(p)
File "C:\Users\john\webdev\workspace\bsby\utils.py", line 18, in formatter
lexer = lexers.get_lexer_by_name(pre['class'])
File "C:\Users\john\webdev\workspace\bsby\lib\pygments\lexers\__init__.py", line 80, in get_lexer_by_name
raise ClassNotFound('no lexer for alias %r found' % _alias)
ClassNotFound: no lexer for alias [u'python'] found
是的,这就是问题所在。我没有导入运行脚本所需的库。这是正确的代码。在
这是另一个问题。。。。在
我想把雷克萨斯的名字像这样动态地拉。。。在
^{pr2}$但是,当我这样做时,我得到以下错误。在
如果我这么做
它可以工作,但只适用于python。在
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