class chainer.utils.type_check.TypeInfoTuple[source]

Type information of input/gradient tuples.

It is a sub-class of tuple containing TypeInfo. The i-th element of this object contains type information of the i-th input/gradient data. As each element is Expr, you can easily check its validity.



Return self[key].


Return len(self).


Implement iter(self).

count(value) → integer -- return number of occurrences of value
index(value[, start[, stop]]) → integer -- return first index of value.

Raises ValueError if the value is not present.


Returns an expression representing its length.


An expression object representing length of the tuple.

Return type



Return self==value.


Return self!=value.


Return self<value.


Return self<=value.


Return self>value.


Return self>=value.


Return self+value.


Return self*value.n


Return self*value.