无法从 python 列表中完全删除零

Question

我有两个清单x=[0.0, -0.9000000000000199, 2.1499999999999773, 1.799999999999983, -1.5000000000000284, -2.3500000000000227, -3.05000000000004, 2.0999999999999943, 3.9999999999999716, 1.8499999999999943, -4.650000000000006, 11.349999999999994]y=[-5.750000000000028, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]我使用下面的逻辑来完全删除零。但 y 的零并未完全删除。for i in x:    if i==0:        x.remove(i)for j in y:    if j==0:        y.remove(j)        print(x)print(y)我得到的输出如下，即我的 y 列表中仍然有零。[-0.9000000000000199, 2.1499999999999773, 1.799999999999983, -1.5000000000000284, -2.3500000000000227, -3.05000000000004, 2.0999999999999943, 3.9999999999999716, 1.8499999999999943, -4.650000000000006, 11.349999999999994][-5.750000000000028, 0.0, 0.0, 0.0, 0.0, 0.0]

Answer 1

迭代列表时不应从列表中删除元素。相反，使用列表理解：

x=[e for e in x if e]
y=[e for e in y if e]

Answer 2

“remove”方法仅删除第一次出现的提供值：

def remove(self, *args, **kwargs): # real signature unknown

    """

    Remove first occurrence of value.

    

    Raises ValueError if the value is not present.

    """

    pass

要从列表中删除所有值，您可以使用以下小方法：

def remove_all_values_from_list(l, val):

    for i in range(l.count(val)):

        l.remove(val)

输出：

[-0.9000000000000199, 2.1499999999999773, 1.799999999999983, -1.5000000000000284, -2.3500000000000227, -3.05000000000004, 2.0999999999999943, 3.9999999999999716, 1.8499999999999943, -4.650000000000006, 11.349999999999994]

[-5.750000000000028]

Answer 3

尝试使用 y = [i for i in y if i != 0]