Python 如何在输出中对列表中的两个元素进行配对？

所以我试着做一个代码来计算两个玩家在测验中的分数差。有第一轮得分和第二轮得分

这就是我到目前为止所做的：

import math

option = input ('How many players?: ')

playerlist = []
firstroundlist = []
secondroundlist = []

j = 0
while j < option:
    name = raw_input('Enter player\'s name: ')
    playerlist.append(name,)

    firstround = input ('Enter first round score: ')
    firstroundlist.append(firstround,)

    secondround = input('Enter second round score: ')
    secondroundlist.append(secondround,)

    j += 1

y=0
z=1
dis=[]
while z<len(playerlist):
    comparison = (firstroundlist[y]+secondroundlist[y])-(firstroundlist[z]+secondroundlist[z])
    print playerlist[y], '-', playerlist [z], 'is', comparison
    z+=1

z==0
y+=1

问题是，如何修改代码，使其类似于：

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference
Player 2 - Player 3 is #scoredifference
Player 2 - Player 4 is #scoredifference
Player 3 - Player 4 is #scoredifference

import itertools
playernum = int(raw_input('How many players?: '))
players = [(
    raw_input('Enter player\'s name: '),
    int(raw_input('Enter first round score: ')),
    int(raw_input('Enter second round score: ')),
) for i in range(playernum)]

for p,q in itertools.combinations(players, 2):
    comparison = (p[1]+p[2])-(q[1]+q[2])
    print (p[0] + '-' + q[0] + 'is' + str(comparison))

我应该为你做这件事。显然，用正确的公式替换

分数差

我应该为你做这件事。显然，用正确的公式替换

分数差

。

您正在寻找的：

请注意，您的数据结构不是最优的。您应该使用玩家信息，如下所示：

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference
Player 2 - Player 3 is #scoredifference
Player 2 - Player 4 is #scoredifference
Player 3 - Player 4 is #scoredifference

import itertools
playernum = int(raw_input('How many players?: '))
players = [(
    raw_input('Enter player\'s name: '),
    int(raw_input('Enter first round score: ')),
    int(raw_input('Enter second round score: ')),
) for i in range(playernum)]

for p,q in itertools.combinations(players, 2):
    comparison = (p[1]+p[2])-(q[1]+q[2])
    print (p[0] + '-' + q[0] + 'is' + str(comparison))

顺便说一下，您当前的代码包含语法错误。而不是

name = raw_input('Enter player's name: ')

你想要：

name = raw_input('Enter player\'s name: ')

另外，您需要的不是

input（）

（执行任意Python代码！），而是

int（raw\u input（））

：

请注意，您的数据结构不是最优的。您应该使用玩家信息，如下所示：

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference

Player 1 - Player 2 is #scoredifference
Player 1 - Player 3 is #scoredifference
Player 1 - Player 4 is #scoredifference
Player 2 - Player 3 is #scoredifference
Player 2 - Player 4 is #scoredifference
Player 3 - Player 4 is #scoredifference

import itertools
playernum = int(raw_input('How many players?: '))
players = [(
    raw_input('Enter player\'s name: '),
    int(raw_input('Enter first round score: ')),
    int(raw_input('Enter second round score: ')),
) for i in range(playernum)]

for p,q in itertools.combinations(players, 2):
    comparison = (p[1]+p[2])-(q[1]+q[2])
    print (p[0] + '-' + q[0] + 'is' + str(comparison))

顺便说一下，您当前的代码包含语法错误。而不是

name = raw_input('Enter player's name: ')

你想要：

name = raw_input('Enter player\'s name: ')

---

另外，您需要

int（raw\u input（））

侧注：不要以这种方式使用while循环，而不是

input（）

（它执行任意Python代码！）。对范围内的j使用

（选项）：…

而不是（

范围（1，len（playerlist））

用于第二个循环）。旁注：不要这样使用while循环。对范围内的j使用

（选项）：…

而不是（

范围（1，len（playerlist））

用于第二个循环）。这将比较3-3。另外，我认为嵌套的

范围（len（））

实际上是非音速的。@KurtSpindler谢谢！顺便问一下，你知道如何打印所有分数差异的平均值吗？我建议将所有分数放入一个数组中，然后

sum（allScores）/len（allScores）

就可以了！这将比较3-3。另外，我认为嵌套的

范围（len（））

实际上是非音速的。@KurtSpindler谢谢！顺便问一下，你知道如何打印所有分数差异的平均值吗？我建议将所有分数放入一个数组中，然后

sum（allScores）/len（allScores）

就可以了！谢谢但是我得到了这个错误：第9行，在itertools中代表p，q。组合（玩家）：类型错误：必需的参数'r'（位置2）没有找到它的意思是什么？哦，对不起，我的错误-我遗漏了我想要的组合数。用

，2

更新了答案。谢谢！但是我得到了这个错误：第9行，在itertools中代表p，q。组合（玩家）：类型错误：必需的参数'r'（位置2）没有找到它的意思是什么？哦，对不起，我的错误-我遗漏了我想要的组合数。用

，2

更新了答案。