# Initialize the list
redis.lpush("mylist", "one")

assert redis.lpushx("mylist", "two", "three") == 3

assert lrange("mylist", 0, -1) == ["three", "two", "one"]

# Non existing key
assert redis.lpushx("non-existent-list", "one") == 0

​
Arguments

​
key
str
required
The key of the list.
​
elements
*List[str]
required
One or more elements to push at the head of the list.

​
Response

The length of the list after the push operation.0 if the list did not exist and thus no element was pushed.
# Initialize the list
redis.lpush("mylist", "one")

assert redis.lpushx("mylist", "two", "three") == 3

assert lrange("mylist", 0, -1) == ["three", "two", "one"]

# Non existing key
assert redis.lpushx("non-existent-list", "one") == 0