def _mk_tbl(fields):
tbl = prettytable.PrettyTable(fields, left_padding_width=1, right_padding_width=1, hrules=prettytable.ALL)
col_max_width = (terminalsize()[0] / len(fields)) - 5
for k in tbl.align:
tbl.align[k] = 'l'
return (tbl, col_max_width)
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