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我有一种 python 字典键值行和列，如下所示。我想要做的是我想在行索引 0 和列索引 0 处添加一个新字段“another_new_field”。

我使用dpath 库来执行此操作，在这里我尝试做的是

    import dpath.util
    import pprint
    
    
    pp = pprint.PrettyPrinter(indent=2)
    
    
    ext_rows = [ { 'row': [ { 'column': [ { 'col': [ {'class': 'bg-success text-white'},
                                          {'field': ['text01']}]},
                               { 'col': [ {'class': 'bg-info text-white'},
                                          {'field': ['text1']}]},
                               { 'col': [ {'class': 'bg-secondary text-white'},
                                          {'field': ['text2']}]}]}]},
                  { 'row': [ { 'column': [ { 'col': [ {'class': 'bg-primary text-white py-3'},
                                                      {'field': ['text3']}]},
                                           { 'col': [ {'size': 6},
                                                      {'class': 'bg-primary text-white py-3'},
                                                      {'field': ['text3']}]}]}]}]
    
    # at row 0, col0 add new field 'another_new_field'
    
    dpath.util.set(ext_rows, '[0]/row/*/column/0/col/*/field', ["another_new_field"])
    
    pp.pprint(ext_rows)

# RESULT IN:
# [ { 'row': [ { 'column': [ { 'col': [ {'class': 'bg-success text-white'},
#                                     {'field': ['another_new_field']}]},
#                          { 'col': [ {'class': 'bg-info text-white'},
#                                     {'field': ['text1']}]},
#                          { 'col': [ {'class': 'bg-secondary text-white'},
#                                     {'field': ['text2']}]}]}]},
# { 'row': [ { 'column': [ { 'col': [ {'class': 'bg-primary text-white py-3'},
#                                     {'field': ['text3']}]},
#                          { 'col': [ {'size': 6},
#                                     {'class': 'bg-primary text-white py-3'},
#                                     {'field': ['text3']}]}]}]}]

如结果所示，它不会附加新字段，而是用新字段替换现有值。但我希望它是这样的：

[ { 'row': [ { 'column': [ { 'col': [ {'class': 'bg-success text-white'},
                                    {'field': ['text01','another_new_field']}]},
                         { 'col': [ {'class': 'bg-info text-white'},
                                    {'field': ['text1']}]},
                         { 'col': [ {'class': 'bg-secondary text-white'},
                                    {'field': ['text2']}]}]}]},
{ 'row': [ { 'column': [ { 'col': [ {'class': 'bg-primary text-white py-3'},
                                    {'field': ['text3']}]},
                         { 'col': [ {'size': 6},
                                    {'class': 'bg-primary text-white py-3'},
                                    {'field': ['text3']}]}]}]}]

我怎样才能做到这一点？谢谢。

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1 回答 1

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您想要的是在关键字段中获取列表并将数据附加到它：

dpath.util.get(ext_rows[0], "/row/*/column/0/col/*/field").append("another_field")
于 2020-11-16T04:18:31.047 回答