List of Builtin Tests

• callable(obj, /)
• Return whether the object is callable (i.e., some kind of function).

Note that classes are callable, as are instances of classes with acall() method.

• defined(value)
• Return true if the variable is defined:

{% if variable is defined %}
    value of variable: {{ variable }}
{% else %}
    variable is not defined
{% endif %}

See the default() filter for a simple way to set undefinedvariables.

• divisibleby(value, num)
• Check if a variable is divisible by a number.

• eq(a, b, /)

• Same as a == b.

  • Aliases
  • ==, equalto

• escaped(value)
• Check if the value is escaped.

• even(value)
• Return true if the variable is even.

• ge(a, b, /)

• Same as a >= b.

  • Aliases
  • >=

• gt(a, b, /)

• Same as a > b.

  • Aliases
  • >, greaterthan

• in(value, seq)
• Check if value is in seq.

New in version 2.10.

• iterable(value)
• Check if it’s possible to iterate over an object.

• le(a, b, /)

• Same as a <= b.

  • Aliases
  • <=

• lower(value)
• Return true if the variable is lowercased.

• lt(a, b, /)

• Same as a < b.

  • Aliases
  • <, lessthan

• mapping(value)
• Return true if the object is a mapping (dict etc.).

Changelog

New in version 2.6.

• ne(a, b, /)

• Same as a != b.

  • Aliases
  • !=

• none(value)
• Return true if the variable is none.

• number(value)
• Return true if the variable is a number.

• odd(value)
• Return true if the variable is odd.

• sameas(value, other)
• Check if an object points to the same memory address than anotherobject:

{% if foo.attribute is sameas false %}
    the foo attribute really is the `False` singleton
{% endif %}

• sequence(value)
• Return true if the variable is a sequence. Sequences are variablesthat are iterable.

• string(value)
• Return true if the object is a string.

• undefined(value)
• Like defined() but the other way round.

• upper(value)
• Return true if the variable is uppercased.