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Copy pathtableformat.py
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65 lines (54 loc) · 1.59 KB
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class TableFormatter:
def headings(self, headers):
'''
Emit the table headings.
'''
raise NotImplementedError()
def row(self, rowdata):
'''
Emit a single row of table data.
'''
raise NotImplementedError()
class TextTableFormatter(TableFormatter):
def headings(self, headers):
for h in headers:
print(f'{h:>10s}', end=' ')
print()
print(('-' * 10 + ' ') * len(headers))
def row(self, rowdata):
for d in rowdata:
print(f'{d:>10s}', end=' ')
print()
class CSVTableFormatter(TableFormatter):
def headings(self, headers):
print(','.join(headers))
def row(self, rowdata):
print(','.join(rowdata))
class HTMLTableFormatter(TableFormatter):
def headings(self, headers):
th = ''
for h in headers:
th += f'<th>{h}</th>'
print(f'<tr>{th}</tr>')
def row(self, rowdata):
td = ''
for d in rowdata:
td += f'<td>{d}</td>'
print(f'<tr>{td}</tr>')
class FormatError(Exception):
pass
def create_formatter(name):
if name == 'txt':
formatter = TextTableFormatter()
elif name == 'csv':
formatter = CSVTableFormatter()
elif name == 'html':
formatter = HTMLTableFormatter()
else:
raise FormatError(f'Unknown table format: {name}')
return formatter
def print_table(obj, cols, formatter):
formatter.headings(cols)
for o in obj:
rowdata = [ str(getattr(o, colname)) for colname in cols ]
formatter.row(rowdata)