python建立一个动态增长的真值表 [英] python build a dynamic growing truth table

问题描述

我的问题很简单: 如何以一种优雅的方式在python中建立一个动态增长的真值表?"

My question is simple: "how to build a dynamic growing truth table in python in an elegant way?"

n = 3

for p in False, True:
    for q in False, True:
        for r in False, True:
            print '|{0} | {1} | {2} |'.format(int(p),int(q), int(r))

n = 4

for p in False, True:
    for q in False, True:
        for r in False, True:
            for s in False, True:
                print '|{0} | {1} | {2} | {3}'.format(int(p),int(q), int(r), int(s))

我想有一个将n作为参数并建立表的函数，没有必要 打印表，返回代表该表的数据结构也是可以的.

I would like to have a function which takes n as a parameter and builds up the table, it is not necessary to print the table, returning a data structure representing the table is fine also.

推荐答案

使用 itertools.product() :

table = list(itertools.product([False, True], repeat=n))

n = 3的结果:

[(False, False, False),
 (False, False, True),
 (False, True, False),
 (False, True, True),
 (True, False, False),
 (True, False, True),
 (True, True, False),
 (True, True, True)]

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