(tbl)
return newtbl
Convert a Pandas dataframe from 64 bit types to 32 bit types to save
    memory or disk space.

    Parameters
    ----------
    tbl : The dataframe to convert

    Returns
    -------
    The converted dataframe
Convert a Pandas dataframe from 64 bit types to 32 bit types to save
    memory or disk space.
Convert a Pandas dataframe from 64 bit types to 32 bit types to save memory or disk space .
def df64bitto32bit(tbl):
    """
    Convert a Pandas dataframe from 64 bit types to 32 bit types to save
    memory or disk space.

    Parameters
    ----------
    tbl : The dataframe to convert

    Returns
    -------
    The converted dataframe
    """
    newtbl = pd.DataFrame(index=tbl.index)
    for colname in tbl.columns:
        newtbl[colname] = series64bitto32bit(tbl[colname])
    return newtbl
def df64bitto32bit ( tbl ) : newtbl = pd . DataFrame ( index = tbl . index ) for colname in tbl . columns : newtbl [ colname ] = series64bitto32bit ( tbl [ colname ] ) return newtbl