python - 朱皮特 : Line magic function not found

Question

我遇到了一个持续错误:

%%writefile csvmagic.py
import pandas as pd
from io import StringIO

def csv(line, cell):
    sio = StringIO(cell)
    return pd.read_csv(sio)

def load_ipython_extension(ipython):
    """This function is called when the extension is
    loaded. It accepts an IPython InteractiveShell
    instance. We can register the magic with the
    `register_magic_function` method of the shell
    instance."""
    ipython.register_magic_function(csv, 'cell')

Overwriting csvmagic.py



%reload_ext csvmagic
%%csv
col1,col2,col3
0,1,2
3,4,5
7,8,9

UsageError: Line magic function `%%csv` not found.

“Line magic”对我来说看起来不太正确，但我无法弄清楚。

来源是here

Answer 1

Afaik，您必须将单元魔法放在单元的开头。但是，%%csv 在您的代码块内。确保以 %%csv 开头的部分位于其自己的单元格中。否则，细胞魔法将被解释为线条魔法。