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"""
Assorted utilities.
"""
import io
def columnize(lines, term_width=80, indent=0, pad=2):
n_lines = len(lines)
if n_lines == 0:
return
col_width = max(len(line) for line in lines)
n_cols = int((term_width + pad - indent) / (col_width + pad))
n_cols = min(n_lines, max(1, n_cols))
col_len = int(n_lines / n_cols) + (0 if n_lines % n_cols == 0 else 1)
if (n_cols - 1) * col_len >= n_lines:
n_cols -= 1
cols = [lines[i * col_len:i * col_len + col_len] for i in range(n_cols)]
rows = list(zip(*cols))
rows_missed = zip(*[col[len(rows):] for col in cols[:-1]])
rows.extend(rows_missed)
sio = io.StringIO()
for row in rows:
sio.write(" " * indent + (" " * pad).join(line.ljust(col_width) for line in row) + "\n")
return sio.getvalue()
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