
"""Template based messages."""

from __future__ import absolute_import, print_function

from flask import render_template
from flask_mail import Message


class TemplatedMessage(Message):
    """Siplify creation of templated messages."""

    def __init__(self, template_body=None, template_html=None, ctx={},
                 **kwargs):
        r"""Build message body and HTML based on provided templates.

        Provided templates can use keyword arguments ``body`` and ``html``
        respectively.

        :param template_body: Path to the text template.
        :param template_html: Path to the html template.
        :param ctx: A mapping containing additional information passed to the
            template.
        :param \*\*kwargs: Keyword arguments as defined in
            :class:`flask_mail.Message`.
        """
        if template_body:
            kwargs['body'] = render_template(
                template_body, body=kwargs.get('body'), **ctx
            )
        if template_html:
            kwargs['html'] = render_template(
                template_html, html=kwargs.get('html'), **ctx
            )
        super(TemplatedMessage, self).__init__(**kwargs)


"""Template based messages."""

from __future__ import absolute_import, print_function

from flask import render_template
from flask_mail import Message


class TemplatedMessage(Message):
    """Siplify creation of templated messages."""

    def __init__(self, template_body=None, template_html=None, ctx=None,
                 **kwargs):
        r"""Build message body and HTML based on provided templates.

        Provided templates can use keyword arguments ``body`` and ``html``
        respectively.

        :param template_body: Path to the text template.
        :param template_html: Path to the html template.
        :param ctx: A mapping containing additional information passed to the
            template.
        :param \*\*kwargs: Keyword arguments as defined in
            :class:`flask_mail.Message`.
        """
        ctx = ctx if ctx else {}
        if template_body:
            kwargs['body'] = render_template(
                template_body, body=kwargs.get('body'), **ctx
            )
        if template_html:
            kwargs['html'] = render_template(
                template_html, html=kwargs.get('html'), **ctx
            )
        super(TemplatedMessage, self).__init__(**kwargs)

Use sentinel value for ctx
Use sentinel value for ctx

  
  """Template based messages."""
  
  from __future__ import absolute_import, print_function
  
  from flask import render_template
  from flask_mail import Message
  
  
  class TemplatedMessage(Message):
      """Siplify creation of templated messages."""
  
-     def __init__(self, template_body=None, template_html=None, ctx={},
+     def __init__(self, template_body=None, template_html=None, ctx=None,
                   **kwargs):
          r"""Build message body and HTML based on provided templates.
  
          Provided templates can use keyword arguments ``body`` and ``html``
          respectively.
  
          :param template_body: Path to the text template.
          :param template_html: Path to the html template.
          :param ctx: A mapping containing additional information passed to the
              template.
          :param \*\*kwargs: Keyword arguments as defined in
              :class:`flask_mail.Message`.
          """
+         ctx = ctx if ctx else {}
          if template_body:
              kwargs['body'] = render_template(
                  template_body, body=kwargs.get('body'), **ctx
              )
          if template_html:
              kwargs['html'] = render_template(
                  template_html, html=kwargs.get('html'), **ctx
              )
          super(TemplatedMessage, self).__init__(**kwargs)
  
Use sentinel value for ctx
## Code Before:

"""Template based messages."""

from __future__ import absolute_import, print_function

from flask import render_template
from flask_mail import Message


class TemplatedMessage(Message):
    """Siplify creation of templated messages."""

    def __init__(self, template_body=None, template_html=None, ctx={},
                 **kwargs):
        r"""Build message body and HTML based on provided templates.

        Provided templates can use keyword arguments ``body`` and ``html``
        respectively.

        :param template_body: Path to the text template.
        :param template_html: Path to the html template.
        :param ctx: A mapping containing additional information passed to the
            template.
        :param \*\*kwargs: Keyword arguments as defined in
            :class:`flask_mail.Message`.
        """
        if template_body:
            kwargs['body'] = render_template(
                template_body, body=kwargs.get('body'), **ctx
            )
        if template_html:
            kwargs['html'] = render_template(
                template_html, html=kwargs.get('html'), **ctx
            )
        super(TemplatedMessage, self).__init__(**kwargs)

## Instruction:
Use sentinel value for ctx
## Code After:

"""Template based messages."""

from __future__ import absolute_import, print_function

from flask import render_template
from flask_mail import Message


class TemplatedMessage(Message):
    """Siplify creation of templated messages."""

    def __init__(self, template_body=None, template_html=None, ctx=None,
                 **kwargs):
        r"""Build message body and HTML based on provided templates.

        Provided templates can use keyword arguments ``body`` and ``html``
        respectively.

        :param template_body: Path to the text template.
        :param template_html: Path to the html template.
        :param ctx: A mapping containing additional information passed to the
            template.
        :param \*\*kwargs: Keyword arguments as defined in
            :class:`flask_mail.Message`.
        """
        ctx = ctx if ctx else {}
        if template_body:
            kwargs['body'] = render_template(
                template_body, body=kwargs.get('body'), **ctx
            )
        if template_html:
            kwargs['html'] = render_template(
                template_html, html=kwargs.get('html'), **ctx
            )
        super(TemplatedMessage, self).__init__(**kwargs)
