Function test_to_string

dask/dataframe/dask_expr/tests/test_format.py:17–86

()

def test_to_string():
    pytest.importorskip("jinja2")
    dtype = "string" if pyarrow_strings_enabled() else "object"
    df = pd.DataFrame(
        {
            "A": [1, 2, 3, 4, 5, 6, 7, 8],
            "B": list("ABCDEFGH"),
            "C": pd.Categorical(list("AAABBBCC")),
        }
    )
    ddf = from_pandas(df, 3)

    exp = dedent(
        f"""\
                           A       B                C
        npartitions=3                                
        0              int64  {dtype}  category[known]
        3                ...     ...              ...
        6                ...     ...              ...
        7                ...     ...              ..."""
    )
    assert ddf.to_string() == exp

    exp_table = f"""<table border="1" class="dataframe">
  <thead>
    <tr style="text-align: right;">
      <th></th>
      <th>A</th>
      <th>B</th>
      <th>C</th>
    </tr>
    <tr>
      <th>npartitions=3</th>
      <th></th>
      <th></th>
      <th></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th>0</th>
      <td>int64</td>
      <td>{dtype}</td>
      <td>category[known]</td>
    </tr>
    <tr>
      <th>3</th>
      <td>...</td>
      <td>...</td>
      <td>...</td>
    </tr>
    <tr>
      <th>6</th>
      <td>...</td>
      <td>...</td>
      <td>...</td>
    </tr>
    <tr>