signature

laktory.narwhals_ext.dataframe.signature

FUNCTION	DESCRIPTION
signature	Returns DataFrame signature.

signature(self)

Returns DataFrame signature.

RETURNS	DESCRIPTION
str	Result
```py
import narwhals as nw
import polars as pl
import laktory as lk # noqa: F401
df = nw.from_native(pl.DataFrame({"x": [1, 2, 3], "label": ["a", "b", "c"]}))
print(signature())
# > DataFrame[x: Int64, label: String]
```

Source code in laktory/narwhals_ext/dataframe/signature.py

def signature(self) -> str:
    """
    Returns DataFrame signature.

    Returns
    -------
    :
        Result

    ```py
    import narwhals as nw
    import polars as pl

    import laktory as lk  # noqa: F401

    df = nw.from_native(pl.DataFrame({"x": [1, 2, 3], "label": ["a", "b", "c"]}))
    print(df.laktory.signature())
    # > DataFrame[x: Int64, label: String]
    ```

    """

    s = ", ".join([f"{k}: {v}" for k, v in self._df.schema.items()])
    s = f"DataFrame[{s}]"
    return s