DataFrame.
append
Append rows of other to the end of caller, returning a new object.
Columns in other that are not in the caller are added as new columns.
Deprecated since version 3.4.0.
The data to append.
If True, do not use the index labels.
If True, raise ValueError on creating index with duplicates.
Currently not supported.
Examples
>>> df = ps.DataFrame([[1, 2], [3, 4]], columns=list('AB'))
>>> df.append(df) A B 0 1 2 1 3 4 0 1 2 1 3 4
>>> df.append(df, ignore_index=True) A B 0 1 2 1 3 4 2 1 2 3 3 4