Question

给出dataframe like this：

,(SELECT CASE
      WHEN charge1.ChargeDescription LIKE N'%heroin%' THEN 'Heroin'
      ELSE 'Not Heroin'
      END
  FROM tblCsCharge AS charge1
           INNER JOIN tblCsCases AS cases1
                           ON charge1.FileNumber = cases1.FileNumber
 WHERE
      charge1.BookedLastName = cases1.BookedLastName
      AND charge1.BookedLastName = cases1.BookedLastName
      AND charge1.BookedDOB = Cases.BookedDOB
      AND cases2.ChargeCode IN (N'579.015-001Y201735')) AS HeroinYN

如何使用C A B 1.1 111 20 222 31 3.3 222 24 333 65 5.5 333 22 6.6 777 74阅读？我试过这个：

pd.read_clipboard

但它引发了一个错误：

df = pd.read_clipboard(index_col=[0, 1])

我该如何解决这个问题？

其他ParserError: Error tokenizing data. C error: Expected 2 fields in line 3, saw 3个问题：

Answer 1

UPDATE：现在它会解析剪贴板 - 即无需事先保存

def read_clipboard_mi(index_names_row=None, **kwargs):
    encoding = kwargs.pop('encoding', 'utf-8')

    # only utf-8 is valid for passed value because that's what clipboard
    # supports
    if encoding is not None and encoding.lower().replace('-', '') != 'utf8':
        raise NotImplementedError(
            'reading from clipboard only supports utf-8 encoding')

    from pandas import compat, read_fwf
    from pandas.io.clipboard import clipboard_get
    from pandas.io.common import StringIO
    data = clipboard_get()

    # try to decode (if needed on PY3)
    # Strange. linux py33 doesn't complain, win py33 does
    if compat.PY3:
        try:
            text = compat.bytes_to_str(
                text, encoding=(kwargs.get('encoding') or
                                get_option('display.encoding'))
            )
        except:
            pass

    index_names = None
    if index_names_row:
        if isinstance(index_names_row, int):
            index_names = data.splitlines()[index_names_row].split()
            skiprows = [index_names_row]
            kwargs.update({'skiprows': skiprows})
        else:
            raise Exception('[index_names_row] must be of [int] data type')

    df = read_fwf(StringIO(data), **kwargs)
    unnamed_cols = df.columns[df.columns.str.contains(r'Unnamed:')].tolist()

    if index_names:
        idx_cols = df.columns[range(len(index_names))].tolist()
    elif unnamed_cols:
        idx_cols = df.columns[range(len(unnamed_cols))].tolist()
        index_names = [None] * len(idx_cols)

    df[idx_cols] = df[idx_cols].ffill()
    df = df.set_index(idx_cols).rename_axis(index_names)

    return df

测试没有索引名称的多索引DF：

In [231]: read_clipboard_mi()
Out[231]:
          C
1.1 111  20
    222  31
3.3 222  24
    333  65
5.5 333  22
6.6 777  74

使用索引名称测试多索引DF：

In [232]: read_clipboard_mi(index_names_row=1)
Out[232]:
          C
A   B
1.1 111  20
    222  31
3.3 222  24
    333  65
5.5 333  22
6.6 777  74

注意：

未经过充分测试
它不支持多级列
见第1点; - ）

注2：请随意使用此代码或创建a pull request on Pandas github

使用pd.read_clipboard复制MultiIndex数据帧？

1 个答案: