英文:
Retrieving a key and value from a dictionary not finding value
问题
您正在尝试从给定的字典中检索特定时间段的值，但是您的代码中存在一些问题。为了正确检索"35,Piano"或其他值，您可以按照以下方式修改您的代码：
import ast
# 假设raw_data[1]包含您的字典字符串
raw_data = [
{
1: {'10:00 11:00': ['35,Piano']}, 2: {'10:00 11:00': ['39,Piano']},
3: {'8:45 9:15': ['88,Piano'], '9:15 9:45': ['89,Piano'], '9:45 10:15': ['99,Piano']},
4: {'9:00 9:30': ['100,Piano', '117,Piano'], '9:30 10:00': ['124,Piano'],
'10:00 10:30': ['125,Piano'], '10:30 11:00': ['126,Piano'], '11:00 11:30': ['127,Piano']},
5: {'9:00 9:30': ['128,Piano'], '9:30 10:00': ['129,Piano'], '10:00 10:30': ['130,Piano'], '10:30 11:00': ['131,Piano']}
}
]
# 假设您想要检索星期几的数据
days_in_current_timetable = [1, 2, 3, 4, 5]
for x in days_in_current_timetable:
# 使用ast.literal_eval()将字符串转换为字典
sterilised_list = ast.literal_eval(raw_data[x])
print("This is The Dictionary: ", sterilised_list)
for time_slot, values in sterilised_list.items():
print("This is the key:", time_slot)
print("This is the value:", values)
这将输出特定时间段的值，例如："35,Piano"。请注意，我在代码中进行了一些修改，以使其更符合Python的语法规则，并检索了字典的正确元素。
英文:
I have a dictionary which looks like this:
{1: {'10:00 11:00': ['35,Piano']}, 2: {'10:00 11:00': ['39,Piano']}, 3: {'8:45 9:15': ['88,Piano'], '9:15 9:45': ['89,Piano'], '9:45 10:15': ['99,Piano']}, 4: {'9:00 9:30': ['100,Piano', '117,Piano'], '9:30 10:00': ['124,Piano'], '10:00 10:30': ['125,Piano'], '10:30 11:00': ['126,Piano'], '11:00 11:30': ['127,Piano']}, 5: {'9:00 9:30': ['128,Piano'], '9:30 10:00': ['129,Piano'], '10:00 10:30': ['130,Piano'], '10:30 11:00': ['131,Piano']}}
It is retrieved via an SQL query as a string and converted by ast.literal_eval()
I am trying to retrieve all values for each time slot, but it doesn't find it.
days_in_current_timetable = [1,2,3,4,5]
for x in days_in_current_timetable:
# data is retrieved from an SQL query as a string so used ast.literal_eval() to convert
self.sterilised_list = ast.literal_eval(raw_data[1])
print("This is The Dictionary: ", sterilised_list)
for slot in self.sterilised_list.values():
for key in slot:
print("This is the key:", key)
print("This is the value: ", sterilised_list.get(key, "Not Found"))
Here is an example of the output:
This is The Dictionary: {1: {'10:00 11:00': ['35,Piano']}, 2: {'10:00 11:00': ['39,Piano']}, 3: {'8:45 9:15': ['88,Piano'], '9:15 9:45': ['89,Piano'], '9:45 10:15': ['99,Piano']}, 4: {'9:00 9:30': ['100,Piano', '117,Piano'], '9:30 10:00': ['124,Piano'], '10:00 10:30': ['125,Piano'], '10:30 11:00': ['126,Piano'], '11:00 11:30': ['127,Piano']}, 5: {'9:00 9:30': ['128,Piano'], '9:30 10:00': ['129,Piano'], '10:00 10:30': ['130,Piano'], '10:30 11:00': ['131,Piano']}}
This is the key: 10:00 11:00
This is the value: Not Found
How should I properly retrieve '35,Piano', or any of the other values?
答案1
得分: 1
sterilised_list应该是self.sterilised_list- 不要称一个字典为列表，这会造成混淆。
key不是sterilised_list的键，而是slot的键。
更改最后一行为：
print("这是值：", slot.get(key, "未找到"))
最小可复现示例（删除了与 self 相关的内容）：
sterilised_dict = {1: {'10:00 11:00': ['35,Piano']}, 2: {'10:00 11:00': ['39,Piano']}, 3: {'8:45 9:15': ['88,Piano'], '9:15 9:45': ['89,Piano'], '9:45 10:15': ['99,Piano']}, 4: {'9:00 9:30': ['100,Piano', '117,Piano'], '9:30 10:00': ['124,Piano'], '10:00 10:30': ['125,Piano'], '10:30 11:00': ['126,Piano'], '11:00 11:30': ['127,Piano']}, 5: {'9:00 9:30': ['128,Piano'], '9:30 10:00': ['129,Piano'], '10:00 10:30': ['130,Piano'], '10:30 11:00': ['131,Piano']}}
print("这是字典：", sterilised_dict)
for slot in sterilised_dict.values():
for key in slot:
print("这是键：", key)
print("这是值：", slot.get(key, "未找到"))
英文:
sterilised_listshould beself.sterilised_list- don't call a dictionary a list. It's confusing
keyis not a key ofsterilised_list, but a key ofslot
Change the last line to
print("This is the value: ", slot.get(key, "Not Found"))
Minimal reproducible example (with self stuff removed):
sterilised_dict = {1: {'10:00 11:00': ['35,Piano']}, 2: {'10:00 11:00': ['39,Piano']}, 3: {'8:45 9:15': ['88,Piano'], '9:15 9:45': ['89,Piano'], '9:45 10:15': ['99,Piano']}, 4: {'9:00 9:30': ['100,Piano', '117,Piano'], '9:30 10:00': ['124,Piano'], '10:00 10:30': ['125,Piano'], '10:30 11:00': ['126,Piano'], '11:00 11:30': ['127,Piano']}, 5: {'9:00 9:30': ['128,Piano'], '9:30 10:00': ['129,Piano'], '10:00 10:30': ['130,Piano'], '10:30 11:00': ['131,Piano']}}
print("This is The Dictionary: ", sterilised_dict)
for slot in sterilised_dict.values():
for key in slot:
print("This is the key:", key)
print("This is the value: ", slot.get(key, "Not Found"))
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