python - 如何使用内联 if 语句打印？

Question

这个字典对应编号的节点:

{0: True, 1: True, 2: True, 3: False, 4: False, 5: False, 6: True, 7: True, 8: False, 9: False}

使用两个打印语句，我想打印标记和未标记的节点如下:

• 标记节点:0 1 2 6 7

• 未标记节点:3 4 5 8 9

我想要接近于:

print("Marked nodes: %d" key in markedDict if markedDict[key] = True)
print("Unmarked nodes: %d" key in markedDict if markedDict[key] = False)

Answer 1

您可以使用列表理解:

nodes = {0: True, 1: True, 2: True,
         3: False, 4: False, 5: False,
         6: True, 7: True, 8: False, 9: False}

print("Marked nodes: ", *[i for i, value in nodes.items() if value])
print("Unmarked nodes: ", *[i for i, value in nodes.items() if not value])

输出:

Marked nodes:  0 1 2 6 7
Unmarked nodes:  3 4 5 8 9