jinja2.exceptions.TemplateSyntaxError: unexpected '%'

Question

Traceback (most recent call last):
File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1997, in call

return self.wsgi_app(environ, start_response)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1985, in wsgi_app

response = self.handle_exception(e)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1540, in handle_exception

reraise(exc_type, exc_value, tb)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflask_compat.py", line 33, in reraise

raise value

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1982, in wsgi_app

response = self.full_dispatch_request()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1614, in full_dispatch_request

rv = self.handle_user_exception(e)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1517, in handle_user_exception

reraise(exc_type, exc_value, tb)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflask_compat.py", line 33, in reraise

raise value

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1612, in full_dispatch_request

rv = self.dispatch_request()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflaskapp.py", line 1598, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)

File "D:pythonpythonObjectflaskyhello.py", line 36, in index

return render_template('index.html',form=form,name=name)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesflasktemplating.py", line 133, in render_template

return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list),

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 869, in get_or_select_template

return self.get_template(template_name_or_list, parent, globals)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 830, in get_template

return self._load_template(name, self.make_globals(globals))

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 804, in _load_template

template = self.loader.load(self, name, globals)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2loaders.py", line 125, in load

code = environment.compile(source, name, filename)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 591, in compile

self.handle_exception(exc_info, source_hint=source_hint)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 780, in handle_exception

reraise(exc_type, exc_value, tb)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2_compat.py", line 37, in reraise

raise value.with_traceback(tb)

File "D:pythonpythonObjectflaskytemplatesindex.html", line 9, in template

<h1>Hello,{%if name%}{{name}}{{%else%}}Stringer{%endif%}!</h1>

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2environment.py", line 497, in _parse

return Parser(self, source, name, encode_filename(filename)).parse()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 896, in parse

result = nodes.Template(self.subparse(), lineno=1)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 878, in subparse

rv = self.parse_statement()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 130, in parse_statement

return getattr(self, 'parse_' + self.stream.current.value)()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 268, in parse_block

node.body = self.parse_statements(('name:endblock',), drop_needle=True)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 165, in parse_statements

result = self.subparse(end_tokens)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 878, in subparse

rv = self.parse_statement()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 130, in parse_statement

return getattr(self, 'parse_' + self.stream.current.value)()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 212, in parse_if

'name:endif'))

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 165, in parse_statements

result = self.subparse(end_tokens)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 870, in subparse

add_data(self.parse_tuple(with_condexpr=True))

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 615, in parse_tuple

args.append(parse())

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 427, in parse_expression

return self.parse_condexpr()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 432, in parse_condexpr

expr1 = self.parse_or()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 445, in parse_or

left = self.parse_and()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 454, in parse_and

left = self.parse_not()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 465, in parse_not

return self.parse_compare()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 469, in parse_compare

expr = self.parse_math1()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 491, in parse_math1

left = self.parse_concat()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 502, in parse_concat

args = [self.parse_math2()]

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 512, in parse_math2

left = self.parse_pow()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 523, in parse_pow

left = self.parse_unary()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 541, in parse_unary

node = self.parse_primary()

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 578, in parse_primary

self.fail("unexpected '%s'" % describe_token(token), token.lineno)

File "D:pythonpythonObjectflaskyvenvlibsite-packagesjinja2parser.py", line 59, in fail

raise exc(msg, lineno, self.name, self.filename)

jinja2.exceptions.TemplateSyntaxError: unexpected '%'

Answer 1

这里，应该是{%else%}，你多加了{}