PLEASE EXPLAIN THIS

Question

I havent understood what this whole code does/means. Can someone explain?
def get_input():
command = input(": ").split()
verb_word = command[0]
if verb_word in verb_dict:
verb = verb_dict[verb_word]
else:
print("Unknown verb {}". format(verb_word))
return
if len(command) >= 2:
noun_word = command[1]
print (verb(noun_word))
else:
print(verb("nothing"))
def say(noun):
return 'You said "{}"'.format(noun)
verb_dict = {
"say": say,
}
while True:
get_input()

Answer 1

If you enter
say
as input it will call the 2nd function Wich prints out 'you said x' while x is either 'nothing' or a second word you entered.
If you don't enter say first it will output unknown verb because only say is in your dictionary.
"say hello" will output you said hello whilest
"hello" will output unknown verb?
edit:
for sololearn playground I recommend:
#while true:
at the bottom cause the loop won't work here