我收到了一个问题,但我真的不明白他们要我做什么。他们给我的问题是:
本练习的目标是创建两个名为
x_list
和的列表y_list
,它们分别包含变量x
和的 10 个实例y
。您还需要创建一个名为 的列表big_list
,其中包含变量x
和y
,每个 10 次,方法是将您创建的两个列表连接起来。
随之而来的代码是:
x = object()
y = object()
# change this code
x_list = [x]
y_list = [y]
big_list = x_list + y_list
print "x_list contains %d objects" % len(x_list)
print "y_list contains %d objects" % len(y_list)
print "big_list contains %d objects" % len(big_list)
# testing code
if x_list.count(x) == 10 and y_list.count(y) == 10:
print "Almost there..."
if big_list.count(x) == 10 and big_list.count(y) == 10:
print "Great!"
结果是:
x_list contains 10 objects
y_list contains 10 objects
big_list contains 20 objects
Almost there...
Great!