Vous êtes un professionnel et vous avez besoin d'une formation ? Sensibilisation à
l'Intelligence Artificielle Voir le programme détaillé

Classe « Cursor »

Méthode pymongo.cursor.Cursor.where

Signature de la méthode where

def where(self, code: 'Union[str, Code]') -> 'Cursor[_DocumentType]' 

Description

help(Cursor.where)

Adds a `$where`_ clause to this query.

The `code` argument must be an instance of :class:`str` or
:class:`~bson.code.Code` containing a JavaScript expression.
This expression will be evaluated for each document scanned.
Only those documents for which the expression evaluates to
*true* will be returned as results. The keyword *this* refers
to the object currently being scanned. For example::

    # Find all documents where field "a" is less than "b" plus "c".
    for doc in db.test.find().where('this.a < (this.b + this.c)'):
        print(doc)

Raises :class:`TypeError` if `code` is not an instance of
:class:`str`. Raises :class:`~pymongo.errors.InvalidOperation` if this
:class:`Cursor` has already been used. Only the last call to
:meth:`where` applied to a :class:`Cursor` has any effect.

.. note:: MongoDB 4.4 drops support for :class:`~bson.code.Code`
  with scope variables. Consider using `$expr`_ instead.

:param code: JavaScript expression to use as a filter

.. _$expr: https://mongodb.com/docs/manual/reference/operator/query/expr/
.. _$where: https://mongodb.com/docs/manual/reference/operator/query/where/

Vous êtes un professionnel et vous avez besoin d'une formation ? Calcul scientifique
avec Python Voir le programme détaillé