列表打印结果有些异常

Question

嗨我有两个列表剪辑和短语。我尝试以两种不同的方式在for循环中运行它们。我期待他们提供相同的输出，但他们给出不同的。怎么样？

snip = ['Hi john', 'Hi sam', 'Hi lila']
phras = ['lets play','lets paint']
for s in snip,phras:
     result = s[:]

print result   # output is ['lets play', 'lets paint']

# Now lets run again

snip = ['Hi john', 'Hi sam', 'Hi lila']
phras = ['lets play','lets paint']
for s in snip,phras:
     result = s[:]
     print result

#output is ['Hi john', 'Hi sam', 'Hi lila']
#          ['lets play','lets paint']

Answer 1

您的print语句不在第一个循环中，因此它只显示分配给result的最后一个值，而第二个print语句位于循环内部，因此打印每个值{ {1}}