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# -*- coding: utf-8 -*-
class TablePrinter(object):
def __init__(self, headers=None, separator='|'):
self.headers = headers
self.separator = separator
self.format_string = ''
self.widths = list()
if headers is not None:
self._calulate_widths([headers])
def _calulate_widths(self, rows):
def _get_column_count(rows):
return min([len(row) for row in rows])
def _column_width(column, width):
widths = [len(elem) for elem in column]
widths.append(width)
return max(widths)
columns = _get_column_count(rows)
while len(self.widths) < columns:
self.widths.append(0)
self.widths = [_column_width(column, width)
for column, width
in zip(zip(*rows), self.widths)]
self._update_format_string()
def _update_format_string(self):
def _column_format(width):
return '%%-%ds' % width
sep = ' %s ' % self.separator
self.format_string = '%s %s %s' % (
self.separator,
sep.join(['%%-%ds' % width for width in self.widths]),
self.separator)
def output(self, rows):
self._calulate_widths(rows)
if self.headers is not None:
self._print_row(self.headers)
self._print_headline()
for row in rows:
self._print_row(row)
def _print_headline(self):
print('%s%s%s' % (
self.separator,
self.separator.join(['-' * (width + 2) for width in self.widths]),
self.separator))
def _print_row(self, row):
print(self.format_string % tuple(row))
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