(enabled_extensions=('html', 'htm', 'xml'),
                      disabled_extensions=(),
                      default_for_string=True,
                      default=False)
return autoescape
Intelligently sets the initial value of autoescaping based on the
    filename of the template.  This is the recommended way to configure
    autoescaping if you do not want to write a custom function yourself.

    If you want to enable it for all templates created from strings or
    for all templates with `.html` and `.xml` extensions::

        from jinja2 import Environment, select_autoescape
        env = Environment(autoescape=select_autoescape(
            enabled_extensions=('html', 'xml'),
            default_for_string=True,
        ))

    Example configuration to turn it on at all times except if the template
    ends with `.txt`::

        from jinja2 import Environment, select_autoescape
        env = Environment(autoescape=select_autoescape(
            disabled_extensions=('txt',),
            default_for_string=True,
            default=True,
        ))

    The `enabled_extensions` is an iterable of all the extensions that
    autoescaping should be enabled for.  Likewise `disabled_extensions` is
    a list of all templates it should be disabled for.  If a template is
    loaded from a string then the default from `default_for_string` is used.
    If nothing matches then the initial value of autoescaping is set to the
    value of `default`.

    For security reasons this function operates case insensitive.

    .. versionadded:: 2.9
Intelligently sets the initial value of autoescaping based on the
    filename of the template.  This is the recommended way to configure
    autoescaping if you do not want to write a custom function yourself.
Intelligently sets the initial value of autoescaping based on the filename of the template . This is the recommended way to configure autoescaping if you do not want to write a custom function yourself .
def select_autoescape(enabled_extensions=('html', 'htm', 'xml'),
                      disabled_extensions=(),
                      default_for_string=True,
                      default=False):
    """Intelligently sets the initial value of autoescaping based on the
    filename of the template.  This is the recommended way to configure
    autoescaping if you do not want to write a custom function yourself.

    If you want to enable it for all templates created from strings or
    for all templates with `.html` and `.xml` extensions::

        from jinja2 import Environment, select_autoescape
        env = Environment(autoescape=select_autoescape(
            enabled_extensions=('html', 'xml'),
            default_for_string=True,
        ))

    Example configuration to turn it on at all times except if the template
    ends with `.txt`::

        from jinja2 import Environment, select_autoescape
        env = Environment(autoescape=select_autoescape(
            disabled_extensions=('txt',),
            default_for_string=True,
            default=True,
        ))

    The `enabled_extensions` is an iterable of all the extensions that
    autoescaping should be enabled for.  Likewise `disabled_extensions` is
    a list of all templates it should be disabled for.  If a template is
    loaded from a string then the default from `default_for_string` is used.
    If nothing matches then the initial value of autoescaping is set to the
    value of `default`.

    For security reasons this function operates case insensitive.

    .. versionadded:: 2.9
    """
    enabled_patterns = tuple('.' + x.lstrip('.').lower()
                             for x in enabled_extensions)
    disabled_patterns = tuple('.' + x.lstrip('.').lower()
                              for x in disabled_extensions)
    def autoescape(template_name):
        if template_name is None:
            return default_for_string
        template_name = template_name.lower()
        if template_name.endswith(enabled_patterns):
            return True
        if template_name.endswith(disabled_patterns):
            return False
        return default
    return autoescape
def select_autoescape ( enabled_extensions = ( 'html' , 'htm' , 'xml' ) , disabled_extensions = ( ) , default_for_string = True , default = False ) : enabled_patterns = tuple ( '.' + x . lstrip ( '.' ) . lower ( ) for x in enabled_extensions ) disabled_patterns = tuple ( '.' + x . lstrip ( '.' ) . lower ( ) for x in disabled_extensions ) def autoescape ( template_name ) : if template_name is None : return default_for_string template_name = template_name . lower ( ) if template_name . endswith ( enabled_patterns ) : return True if template_name . endswith ( disabled_patterns ) : return False return default return autoescape