Python jinja2.exceptions.TemplateError() Examples

def main():
    """Regenerate pages listed in global `REGEN` list."""
    env = SandboxedEnvironment(undefined=StrictUndefined)
    for target, get_data, template in REGEN:
        print("Regenerating", target)
        data = get_data()
        template_text = requests.get(template).text
        try:
            rendered = env.from_string(template_text).render(**data)
        except TemplateError as error:
            print("Error while regenerating", target)
            print(error)
            return 1
        with open(target, "w") as target:
            target.write(rendered)
    return 0 

def main():
    """Regenerate pages listed in global `REGEN` list."""
    env = SandboxedEnvironment(undefined=StrictUndefined)
    for target, get_data, template in REGEN:
        print("Regenerating", target)
        data = get_data()
        if Path(template).exists():
            with open(template) as fd:
                template_text = fd.read()
        else:
            template_text = requests.get(template).text
        try:
            rendered = env.from_string(template_text).render(**data)
        except TemplateError as error:
            print("Error while regenerating", target)
            print(error)
            return 1
        with open(target, "w") as target:
            target.write(rendered)
    return 0 

def render_xml(self, src_xml, context, jinja_env=None):
        src_xml = src_xml.replace(r'<w:p>', '\n<w:p>')
        try:
            if jinja_env:
                template = jinja_env.from_string(src_xml)
            else:
                template = Template(src_xml)
            dst_xml = template.render(context)
        except TemplateError as exc:
            if hasattr(exc, 'lineno') and exc.lineno is not None:
                line_number = max(exc.lineno - 4, 0)
                exc.docx_context = map(lambda x: re.sub(r'<[^>]+>', '', x),
                                       src_xml.splitlines()[line_number:(line_number + 7)])
            raise exc
        dst_xml = dst_xml.replace('\n<w:p>', '<w:p>')
        dst_xml = (dst_xml
                   .replace('{_{', '{{')
                   .replace('}_}', '}}')
                   .replace('{_%', '{%')
                   .replace('%_}', '%}'))
        return dst_xml 

def test_invalid_block_templated_message_templates(app_with_mail):
    """Test invalid templates."""
    with app_with_mail.app_context():
        with pytest.raises(TemplateError) as ex:
            BlockTemplatedMessage("mail/blank.html")
        assert "No block with name 'subject'" in str(ex.value)

        with pytest.raises(TemplateError) as ex:
            BlockTemplatedMessage("mail/subject_only.html")
        assert "No block with name 'body_plain'" in str(ex.value) 

def render_block(self, template, block_name):
        """Return a Jinja2 block as a string."""
        new_context = template.new_context
        if block_name not in template.blocks:
            raise TemplateError("No block with name '{}'".format(block_name))
        lines = template.blocks[block_name](new_context(vars=self.ctx))
        return "".join(lines) 

def render(self, context, language_code=DEFAULT_LANG):
        """
        Render this notification template with given context and language

        Returns a dict containing all content fields of the template. Example:

        {'subject': 'bar', 'body': 'baz', 'html_body': '<b>foobar</b>'}

        """

        env = SandboxedEnvironment(trim_blocks=True, lstrip_blocks=True, undefined=StrictUndefined)
        env.filters['format_datetime'] = format_datetime

        logger.debug('Rendering template for notification %s' % self.type)

        activate(language_code)

        try:
            rendered_notification = {
                attr: env.from_string(getattr(self, attr)).render(context)
                for attr in ('subject', 'html_body')
            }
            if self.body:
                rendered_notification['body'] = env.from_string(self.body).render(context)
            else:
                # if text body is empty use html body without tags as text body
                rendered_notification['body'] = strip_tags(rendered_notification['html_body'])
            return rendered_notification
        except TemplateError as e:
            raise NotificationTemplateException(e) from e 

def process_cmds(cmds, overrides):
    """

    :param cmds:
    :param overrides:
    :return:
    """
    data = ''
    for cmd in cmds:
        if cmd.startswith('#'):
            continue
        else:
            try:
                newcmd = Environment(undefined=undefined).from_string(cmd).render(overrides)
                data += "- %s\n" % newcmd.replace(": ", "':' ")
            except TemplateError as e:
                pprint("Error rendering cmd %s. Got: %s" % (cmd, e.message), color='red')
                os._exit(1)
    return data 

def process_ignition_cmds(cmds, overrides):
    """

    :param cmds:
    :param overrides:
    :return:
    """
    path = '/usr/local/bin/first.sh'
    permissions = '700'
    content = ''
    for cmd in cmds:
        try:
            newcmd = Environment(undefined=undefined).from_string(cmd).render(overrides)
            content += "%s\n" % newcmd
        except TemplateError as e:
            pprint("Error rendering cmd %s. Got: %s" % (cmd, e.message), color='red')
            os._exit(1)
    if content == '':
        return content
    else:
        if not content.startswith('#!'):
            content = "#!/bin/sh\n%s" % content
        content = quote(content)
        data = {'filesystem': 'root', 'path': path, 'mode': int(permissions, 8),
                "contents": {"source": "data:,%s" % content, "verification": {}}}
        return data 

def check_compilation(self, data):
        """Tests that a template string can be successfully compiled
        """
        exception = None
        result = None
        try:
            result = utils.compile_template_string(data)
        except TemplateError as error:
            exception = error
        return result, exception 

def render(self):
    try:
      return self.load_template().render(**self.template_config)
    except TemplateError, e:
      raise HokusaiError("Rendering template raised error %s <message '%s'>" % (e.__class__, e.message)) 

def __init__(self, template, ctx={}, **kwargs):
        """Build message body and HTML based on the provided template.

        The template needs to provide two blocks: subject and body. An optional
        html block can also be provided for HTML rendered emails.

        :param template: Path to the template file.
        :param ctx: A mapping containing additional information passed to the
            template.
        :param **kwargs: Named arguments as defined in
            :class:`flask_mail.Message`.
        """
        self.template = template
        self.id = str(uuid.uuid4())

        ctx.update(dict(
            spa_routes=dict(
                HOST=current_app.config["SPA_HOST"],
                PATHS=current_app.config["SPA_PATHS"],
            ),
        ))
        self.ctx = ctx

        tmpl = current_app.jinja_env.get_template(template)
        kwargs["subject"] = self.render_block(tmpl, "subject").strip()
        kwargs["body"] = self.render_block(tmpl, "body_plain")
        try:
            kwargs["html"] = self.render_block(tmpl, "body_html")
        except TemplateError:
            kwargs["html"] = kwargs["body"]

        footer_tmpl = current_app.jinja_env.get_template(self.FOOTER_TEMPLATE)
        footer_plain = self.render_block(footer_tmpl, "footer_plain")
        try:
            footer_html = self.render_block(footer_tmpl, "footer_html")
        except TemplateError:
            footer_html = footer_plain

        kwargs["body"] += footer_plain
        kwargs["html"] += footer_html

        kwargs["body"] = kwargs["body"].strip()
        kwargs["html"] = kwargs["html"].strip()

        kwargs.setdefault("sender", current_app.config["MAIL_NOTIFY_SENDER"])
        kwargs.setdefault("cc", current_app.config["MAIL_NOTIFY_CC"])
        kwargs.setdefault("bcc", current_app.config["MAIL_NOTIFY_BCC"])

        super(BlockTemplatedMessage, self).__init__(**kwargs) 

def convert():
    jinja2_env = Environment()

    # Load custom filters
    custom_filters = get_custom_filters()
    app.logger.debug('Add the following customer filters to Jinja environment: %s' % ', '.join(custom_filters.keys()))
    jinja2_env.filters.update(custom_filters)

    # Load the template
    try:
        jinja2_tpl = jinja2_env.from_string(request.form['template'])
    except (exceptions.TemplateSyntaxError, exceptions.TemplateError) as e:
        return "Syntax error in jinja2 template: {0}".format(e)


    dummy_values = [ 'Lorem', 'Ipsum', 'Amet', 'Elit', 'Expositum',
        'Dissimile', 'Superiori', 'Laboro', 'Torquate', 'sunt',
    ]
    values = {}
    if bool(int(request.form['dummyvalues'])):
        # List template variables (introspection)
        vars_to_fill = meta.find_undeclared_variables(jinja2_env.parse(request.form['template']))

        for v in vars_to_fill:
            values[v] = choice(dummy_values)
    else:
        # Check JSON for errors
        if request.form['input_type'] == "json":
            try:
                values = json.loads(request.form['values'])
            except ValueError as e:
                return "Value error in JSON: {0}".format(e)
        # Check YAML for errors
        elif request.form['input_type'] == "yaml":
            try:
                values = yaml.load(request.form['values'])
            except (ValueError, yaml.parser.ParserError, TypeError) as e:
                return "Value error in YAML: {0}".format(e)
        else:
            return "Undefined input_type: {0}".format(request.form['input_type'])

    # If ve have empty var array or other errors we need to catch it and show
    try:
        rendered_jinja2_tpl = jinja2_tpl.render(values)
    except (exceptions.TemplateRuntimeError, ValueError, TypeError) as e:
        return "Error in your values input filed: {0}".format(e)

    if bool(int(request.form['showwhitespaces'])):
        # Replace whitespaces with a visible character (will be grayed with javascript)
        rendered_jinja2_tpl = rendered_jinja2_tpl.replace(' ', u'•')

    return escape(rendered_jinja2_tpl).replace('\n', '<br />') 

def output(folder, results, html_content=None):
    can_quit = False
    do_overwrite = confirm("Can the folder {path} be overwritten?".format(path=folder))
    print("vvvvvvvvv")
    while not can_quit:
        if do_overwrite:
            try:
                import Send2Trash
                Send2Trash.send2trash(folder)
            except ImportError:
                import shutil
                shutil.rmtree(folder)
            # end try
        # end if

        # write crawled data
        mkdir_p(folder)
        with open(path_join(folder, "api.py"), "w") as f:
            f.write("[\n    ")
            f.write(",\n    ".join([repr(result) for result in results]))
            f.write("\n]")
            # end for
        # end with
        if html_content:
            with open(path_join(folder, "api.html"), "wb") as f:
                f.write(html_content)
            # end with
        # end if

        # write templates
        try:
            safe_to_file(folder, results)
        except TemplateError as e:
            if isinstance(e, TemplateSyntaxError):
                logger.exception("Template error at {file}:{line}".format(file=e.filename, line=e.lineno))
            else:
                logger.exception("Template error.")
                # end if
        # end try
        print("Writen to file.")
        can_quit = not confirm("Write again after reloading templates?", default=True)
    print("#########")
    print("Exit.")
# end def