# dask.dataframe.DataFrame.iterrows

DataFrame.iterrows()

  Iterate over DataFrame rows as (index, Series) pairs.

  This docstring was copied from pandas.core.frame.DataFrame.iterrows.

  Some inconsistencies with the Dask version may exist.

  Yields:
    index label or tuple of label

      The index of the row. A tuple for a MultiIndex.

    data Series

      The data of the row as a Series.

  See also

  `DataFrame.itertuples`

    Iterate over DataFrame rows as namedtuples of the values.

  `DataFrame.items`

    Iterate over (column name, Series) pairs.

  Notes

  1. Because `iterrows` returns a Series for each row, it does not preserve dtypes across the rows (dtypes are preserved across columns for DataFrames).

     To preserve dtypes while iterating over the rows, it is better to use `itertuples()` which returns namedtuples of the values and which is generally faster than `iterrows`.

  2. You should never modify something you are iterating over. This is not guaranteed to work in all cases. Depending on the data types, the iterator returns a copy and not a view, and writing to it will have no effect.

  Examples

      >>> df = pd.DataFrame([[1, 1.5]], columns=['int', 'float'])
      >>> row = next(df.iterrows())[1]
      >>> row
      int      1.0
      float    1.5
      Name: 0, dtype: float64
      >>> print(row['int'].dtype)
      float64
      >>> print(df['int'].dtype)
      int64