jupyter 实验室单元中循环内的输入

Question

我正在运行使用 jupyter 实验室笔记本我有一个名称列表，我希望能够输入一些信息以了解列表中每个项目之间的关系。

我的想法通常是遍历 for 循环，但我不认为在 jupyter 中可以循环输入。

names = ['alex','tom','james']
relationships = []
for i in names:
    for j in names:
        if j==i:
            continue
        skip = False
        for r in relationships:
            if r[0] == {i,j}:
                skip = True
                break
        if skip == True:
            # print(f'skipping {i,j}')
            continue
        strength = input(f'what is the relationship between {i} and {j}?')
        relationships.append(({i,j},strength))

print(relationships)

如果我运行它在终端中但在 jupyter 实验室中不可用，这会起作用，什么可能起作用？

Answer 1

您可以使用 itertools.permutations() 进一步简化您的代码。

示例：

import itertools

names = ['alex','tom','james']

unique = set()
permutations = set(itertools.permutations(names, 2))

for pair in permutations:
    if pair not in unique and pair[::-1] not in unique:
        unique.add(pair)

relationships = []

for pair in unique:
    strength = input(f'what is the relationship between {pair[0]} and {pair[1]}?')
    relationships.append((pair,strength))

print(relationships)

控制台输出：

what is the relationship between alex and james?12
what is the relationship between alex and tom?5
what is the relationship between james and tom?6
[(('alex', 'james'), '12'), (('alex', 'tom'), '5'), (('james', 'tom'), '6')]

但是，即使您的代码在 jupyter notebook 中似乎也能正常工作：

您可以尝试重新启动 python 内核，即在菜单中转到内核 -> 重新启动和运行全部。

jupyter 实验室单元中循环内的输入

Inputs within loop in jupyter lab cell

python

jupyter-notebook

jupyter-lab