对于这可能多么简单，我深表歉意，但我对这段代码的一部分感到有些困惑。
# Geek Translator
# Demonstrates using dictionaries
geek = {"404": "clueless. From the web error message 404, meaning page not found.",
"Googling": "searching the Internet for background information on a person.",
"Keyboard Plague": "the collection of debris found in computer keyboards.",
"Link Rot" : "the process by which web page links become obsolete.",
"Percussive Maintainance" : "the act of striking an electronic device to make it work.",
"Uninstalled" : "being fired. Especially popular during the dot-bomb era."}
choice = None
while choice != "0":
print(
"""
Geek Translator
0 - Quit
1 - Look Up a Geek Term
2 - Add a Geek Term
3 - Redefine a Geek Term
4 - Delete a Geek Term
"""
)
choice = input("Choice: ")
print()
# exit
if choice == "0":
print("Good-bye.")
# get a definition
elif choice == "1":
term = input("What term do you want me to translate?: ")
if term in geek:
definition = geek[term]
print("\n", term, "means", definition)
else:
print("\nSorry, I don't know", term)
# add a term-definition pair
elif choice == "2":
term = input("What term do you want me to add?: ")
if term not in geek:
definition = input("\nWhat's the definition?: ")
geek[term] = definition
print("\n", term, "has been added.")
else:
print("\nThat term already exists! Try redefining it.")
# redefining an existing term
elif choice == "3":
term = input("What term do you want me to redefine?: ")
if term in geek:
definition = input("What's the new definition?: ")
geek[term] = definition
print("\n", term, "has been redefined.")
else:
print("\nThat term doesn't exist! Try adding it.")
# delete a term-definition pair
elif choice == "4":
input("What term do you want me to delete?")
if term in geek:
del geek[term]
print("\nOkay, I deleted", term)
else:
print("\nI can't do that!", term, "doesn't exist in the dictionary.")
# some unknown choice
else:
print("\nSorry, but", choice, "isn't a valid choice.")
input("\n\nPress the enter key to exit.")
我了解所有这些是如何工作的，除了 print() 函数之后choice = input(Choice: ")
为什么会在那里？如果我删除它，没有任何变化（据我所知），所以我很好奇它的重要性。