LPUSHX

Push an element at the head of the list only if the list exists.

1 min read

Arguments#

keystrrequired#

The key of the list.

elements*List[str]required#

One or more elements to push at the head of the list.

Response#

numberrequired

The length of the list after the push operation.

0 if the list did not exist and thus no element was pushed.

LPUSH LRANGE

# Initialize the listredis.lpush("mylist", "one")assert redis.lpushx("mylist", "two", "three") == 3assert lrange("mylist", 0, -1) == ["three", "two", "one"]# Non existing keyassert redis.lpushx("non-existent-list", "one") == 0