如何在python中定制数组

Question

我有这张单子

{"FieldFlags": "0", "FieldNameAlt": "Please forgive me", "FieldName": "field1", "FieldType": "Text", "FieldJustification": "Left", "FieldValue": "test"},
 {"FieldJustification": "Left", "FieldNameAlt": "Please forgive me", "FieldName": "min_speed", "FieldType": "Text", "FieldFlags": "0"},
 {"FieldJustification": "Left", "FieldNameAlt": "Please forgive me", "FieldName": "avg_speed", "FieldType": "Text", "FieldFlags": "0"}, 
 {"FieldJustification": "Left", "FieldNameAlt": "Please forgive me", "FieldName": "lowest_speed", "FieldType": "Text", "FieldFlags": "0"},
 {"FieldJustification": "Left", "FieldNameAlt": "Please forgive me", "FieldName": "air", "FieldType": "Text", "FieldFlags": "0"}, 
 {"FieldJustification": "Left", "FieldNameAlt": "Please forgive me", "FieldName": "slope", "FieldType": "Text", "FieldFlags": "0"}]

出于我的目的，我需要将这个数组转换为

fields = [('field1','test'),('min_speed',''),('avg_speed','')..]

所以基本上我想要(FiedName,FieldValue)的元组

如果fieldValue不存在，则应显示为空

我怎样才能把它转换成

Answer 1

fields = [(d['FieldName'], d.get('FieldValue', '')) for d in your_list]

Answer 2

也可以使用map（）：

fields = map(lambda d: (d['FieldName'], d.get('FieldValue', '')), your_list)