发展一个 for 循环以跳过不等于的字典键和值

Question

背景
我的结构如下：

trash = [ {'href': 'https://www.simplyrecipes.com/recipes/cuisine/portuguese/'},
          {'href': 'https://www.simplyrecipes.com/recipes/cuisine/german/'},
          {'href': 'https://www.simplyrecipes.com/recipes/season/seasonal_favorites_spring/'},
          {'href': 'https://www.simplyrecipes.com/recipes/type/condiment/'},
          {'href': 'https://www.simplyrecipes.com/recipes/ingredient/adobado/'}]
          {'href': 'https://www.simplyrecipes.com/', 
          'title': 'Simply Recipes Food and Cooking Blog', 'rel': ['home']},]

如您所见，大多数键是 'href'，大多数值包含 'https://www.simplyrecipes.com/recipes/'。问题是那些不符合此命名约定的键和值...

代码：
此代码遍历结构并使用 re.findall 获取 'recipes/' 和 [=] 之间的字符串值17=] 为其对应的值创建一个新的键名。

for x in trash:
    for y in x.values():
        txt = ''
        for i in re.findall("recipes/.*", y):
            txt += i
            title = txt.split('/')[1]
            print({title: y})

输出：
假设我删除了不符合命名约定的 keys 和 values 'href' 并包含 'https://www.simplyrecipes.com/recipes/' 的字符串值，代码工作正常，如下所示：

{'cuisine': 'https://www.simplyrecipes.com/recipes/cuisine/portuguese/'}
{'cuisine': 'https://www.simplyrecipes.com/recipes/cuisine/german/'}
{'season': 'https://www.simplyrecipes.com/recipes/season/seasonal_favorites_spring/'}
{'type': 'https://www.simplyrecipes.com/recipes/type/condiment/'}
{'ingredient': 'https://www.simplyrecipes.com/recipes/ingredient/adobado/'}

问题：
代码的问题是，如果结构具有未确认的键和值，我会得到 TypeError: expected string or bytes-like object代码中的命名约定。

问题：
我将如何改进此代码，以便它会跳过任何不存在的键t 命名为 'href'，如果它们命名为 'href'，如果它们的值不包含 'https://www.simplyrecipes.com/recipes/'，将跳过？

Answer 1

for d in trash:
    for key, value in d.items():
        if key != "href" or "https://www.simplyrecipes.com/recipes/" not in value:
            continue  # Move onto next iteration
        txt = ''
        for i in re.findall("recipes/.*", value):
            txt += i
            title = txt.split('/')[1]
            print({title: value})

您可以使用 dict.items() 遍历字典的键和值。然后你可以使用 if 语句来检查你的条件，如果不满足则 continue。

发展一个 for 循环以跳过不等于的字典键和值

Evolving a for loop to skip dict key and values that are not equal to

python

dictionary

for-loop

list

findall