Walrus operator in Python 3.8 vs if-let macro in Clojure

if_let_macro.clj

dev> (if-let [coll (seq [1 2 3])]
       (println coll)
       (println "EMPTY"))
(1 2 3)
nil
dev> (if-let [coll (seq [])]
       (println coll)
       (println "EMPTY"))
EMPTY
nil
;; macro expansion
dev> (macroexpand-1
      '(if-let [coll (seq [1 2 3])]
         (println coll)
         (println "EMPTY")))
(clojure.core/let
 [temp__5733__auto__ (seq [1 2 3])]
 (if
  temp__5733__auto__
  (clojure.core/let [coll temp__5733__auto__] (println coll))
  (println "EMPTY")))

walrus_operator.py

In [1]: if coll := [1, 2, 3]:
   ...:     print(coll)
   ...: else:
   ...:     print('EMPTY')
   ...:
[1, 2, 3]

In [2]: if coll := []:
   ...:     print(coll)
   ...: else:
   ...:     print('EMPTY')
   ...:
EMPTY

# prior to version 3.8
In [3]: coll = [1, 2, 3]

In [4]: if coll:
   ...:     print(coll)
   ...: else:
   ...:     print('EMPTY')
   ...:
[1, 2, 3]