Adds a sandbox layer to Jinja as it was the default behavior in the old Jinja 1 releases. This sandbox is slightly different from Jinja 1 as the default behavior is easier to use.

The behavior can be changed by subclassing the environment.

  1. 2010 by the Jinja Team.



is_internal_attribute(obj, attr) Test if the attribute given is an internal python attribute.
modifies_known_mutable(obj, attr) This function checks if an attribute on a builtin mutable object (list, dict, set or deque) would modify it if called.
safe_range(*args) A range that can’t generate ranges with a length of more than MAX_RANGE items.
unsafe(f) Marks a function or method as unsafe.


Environment([block_start_string, ...]) The core component of Jinja is the Environment.
ImmutableSandboxedEnvironment(*args, **kwargs) Works exactly like the regular SandboxedEnvironment but does not permit modifications on the builtin mutable objects list, set, and dict by using the modifies_known_mutable() function.
MutableMapping A MutableMapping is a generic container for associating key/value pairs.
MutableSequence All the operations on a read-only sequence.
MutableSet A mutable set is a finite, iterable container.
SandboxedEnvironment(*args, **kwargs) The sandboxed environment.
Set([iterable]) Mutable set class.
UserDict(*args, **kwargs)
deque deque([iterable[, maxlen]]) –> deque object


SecurityError([message]) Raised if a template tries to do something insecure if the sandbox is enabled.