按值获取特定列表python

Question

我有一个字典列表，看起来像这样。

charts = [[{'select': 'scatter-form'}], [{'select': 'line-form'}]]

我想通过'select' 键的值获取列表。 例如：

if charts['select'] == "scatter-form":
   print("scatter-form") or [{'select': 'scatter-form'}]
if charts['select'] == "line-form":
   print("line-form") or [{'select': 'line-form'}]

由于某些错误list indices must be integers or slices, not str，这个无法正常工作

Answer 1

charts 是一个嵌套列表。你应该迭代它。

charts = [[{'select': 'scatter-form'}], [{'select': 'line-form'}]]


for [chart] in charts:
    if chart['select'] == "scatter-form":
       print("scatter-form") or [{'select': 'scatter-form'}]
    if chart['select'] == "line-form":
       print("line-form") or [{'select': 'line-form'}]

输出：

scatter-form
line-form

或者

for chart in charts:
    if chart[0]['select'] == "scatter-form":
       print("scatter-form") or [{'select': 'scatter-form'}]
    if chart[0]['select'] == "line-form":
       print("line-form") or [{'select': 'line-form'}]