assert redis.hsetnx("myhash", "field1", "Hello") == True
assert redis.hsetnx("myhash", "field1", "World") == False

​
Arguments

​
key
str
required
The key of the hash.
​
field
str
required
The name of the field.
​
value
Any
required
The value to set.

​
Response

True if the field was set, False if it already existed.
assert redis.hsetnx("myhash", "field1", "Hello") == True
assert redis.hsetnx("myhash", "field1", "World") == False