RobotFramework中列表中的Access Dictionary元素显示错误列表对象没有属性

这是程序代码，我有一个json文件code.json，结构如下： [{key:value}，{key:value}]

当我将列表元素转换为字典时，它抛出错误

*** Settings ***
Library  JSONLibrary
Library  OperatingSystem
Library  unicodelist.py
Library  Collections

*** Test Cases ***
test json data1

    ${json_obj}=    Get file  code.json
    ${getfile}=  evaluate    json.loads('''${json_obj}''')    json
    #getfile contain json of list with dictionary
    ${obj}=  Convert To List  ${getfile}
    log to console   ${obj}
    #converted sucessfully
    log to console  " Display 1"
    #just log
    ${length}=  get length  ${obj}
    log to console  ${length}
    ${list0} =  Get From List  ${obj}  0
    log to console  ${list0}
    #list0 contain first dictionary element inside the list
    ${convert}=  Convert To Dictionary  ${list0}
    log to console  ${convert}
    # no error
    log to console  " Display 2"
    ${get_item} =  Get Dictionary Keys  ${obj}
    log to console   ${get_item}
    #error list' object has no attribute 'Keys'
    log to console  " Display 3"
    ${get_item} =  Copy Dictionary   ${obj}
    log to console   ${get_item}
    # error list' object has no attribute 'copy'

---

您似乎正在进行大量不必要的数据转换，并且混淆了对象的类型

如果您删除了所有不必要的转换，那么您的代码就可以工作。如果使用更具描述性的变量名，也会有所帮助

例如：

*** Settings ***
Library  OperatingSystem
Library  Collections

*** Test Cases ***
test json data1

    # ${json_data} is a string of characters
    ${json_data}=    Get file  code.json

    # ${obj_list} is a list of dictionaries
    ${obj_list}=  evaluate    json.loads('''${json_data}''')    json
    log to console  \nobj_list: ${obj_list}

    # ${obj} is the first dictionary in the list
    ${obj} =  Get From List  ${obj_list}  0
    log to console  obj: ${obj}

    # ${keys} is a list of keys
    ${keys} =  Get Dictionary Keys  ${obj}
    log to console   keys: ${keys}

    # ${new_obj} is a copy of the original obj
    ${new_obj} =  Copy Dictionary   ${obj}
    log to console   new_obj: ${new_obj}

---

这是json文件：[{“id”：29，“name”：“small”，“city”：“AA”}，{“id”：40，“name”：“medium”，“city”：“BB”}，{“id”：30，“name”：“Large”，“city”：“CC”}，{“id”：35，“portfolio_name”：“Large”，“city”：“DD”}]请不要将代码或数据放在注释部分。请回答您的问题，并在此处添加其他信息。@bryan，我尝试了很多次，但都不管用，所以我将其张贴在此处