def cols_str ( columns ) : cols = "" for c in columns : cols = cols + wrap ( c ) + ', ' return cols [ : - 2 ]
make columns strings python
Concatenate list of columns into a string .
def cols_str(columns):
    """Concatenate list of columns into a string."""
    cols = ""
    for c in columns:
        cols = cols + wrap(c) + ', '
    return cols[:-2]