小编Chr*_*son的帖子

问题是使用嵌套的json对象数组标准化json。我看过类似的问题，并试图使用他们的解决方案无济于事。

这就是我的json对象的样子。

{
  "results": [
    {
      "_id": "25",
      "Product": {
        "Description": "3 YEAR",
        "TypeLevel1": "INTEREST",
        "TypeLevel2": "LONG"
      },
      "Settlement": {},
      "Xref": {
        "SCSP": "96"
      },
      "ProductSMCP": [
        {
          "SMCP": "01"
        }
      ]
    },
    {
      "_id": "26",
      "Product": {
        "Description": "10 YEAR",
        "TypeLevel1": "INTEREST",
        "Currency": "USD",
        "Operational": true,
        "TypeLevel2": "LONG"
      },
      "Settlement": {},
      "Xref": {
        "BBT": "CITITYM9",
        "TCK": "ZN"
      },
      "ProductSMCP": [
        {
          "SMCP": "01"
        },
        {
          "SMCP2": "02"
        }
      ]
    }
  ]
}

这是我的规范化json对象的代码。

data = json.load(j)
data = data['results'] …

我有一个正则表达式<type '_sre.SRE_Pattern'>，我想用另一个字符串替换匹配的字符串。这是我所拥有的：

compiled = re.compile(r'some regex expression')
s = 'some regex expression plus some other stuff'
compiled.sub('substitute', s)
print(s)

并且s应该是

'substitute plus some other stuff'

但是，我的代码不起作用并且字符串没有改变。

我有一个df由100行和24列组成的。列类型是字符串。当我尝试将数据框追加到KDB时，抛出了以下错误

UnicodeEncodeError: 'ascii' codec can't encode character '\xd3' in position 9: ordinal not in range(128)

这是我df中第一行的示例。

                        AnnouncementDate AuctionDate    BBT  \
_id
00000067   2012-12-11T00:00:00.000+00:00         NaN   FHLB

           CouponDividendRate DaysToSettle  \
_id
00000067                 0.61            1

                                        Description  \
_id
00000067                         FHLB 0.61 12/28/16

                     FirstSettlementDate           ISN IsAgency IsWhenIssued  \
_id
00000067   2012-12-28T00:00:00.000+00:00  US313381K796     True        False


           ...  OnTheRunTreasury OperationalIndicator  \
_id        ...
00000067   ...               NaN                False


          OriginalAmountOfPrincipal OriginalMaturityDate  \
_id
00000067                 13000000.0                  NaN


          PrincipalAmountOutstanding       SCSP       SMCP  \
_id
00000067                         0.0  313381K79   76000000

           SecurityTypeLevel1 SecurityTypeLevel2 …