Python 3.7:
以下代码为什么起作用(着重于函数):
shelf = ["Zaubersäge","leer","Wunderkekse","Trickarten","leer"]
def add_shelf(article):
shelf[(shelf.index("leer"))] = article
return
add_shelf("Rubik's Cube")
print(shelf)
但不是这个:
shelf = ["Zaubersäge","leer"]
def add_shelf(article):
return (shelf[(shelf.index("leer"))] = article)
add_shelf("Rubik's Cube")
print(shelf)