blob: 6df49f7bcc485e84d7f09a053d6fe9bbdc1bde93 (
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class Table:
def __init__(self, *columns, rows=None):
self.columns = tuple(columns if isinstance(columns[0], str) else columns[0])
self.rows = rows or []
if rows:
assert len(rows[0]) == len(self.columns)
self.reader = RowReader(self.columns)
self.range_reader = RangeReader(self)
def append(self, row):
assert len(row) == len(self.columns)
self.rows.append(row)
def pop(self):
self.rows.pop()
@property
def width(self):
return len(self.columns)
def __len__(self):
return len(self.rows)
def __iter__(self):
return TableIter(self)
def __getitem__(self, index):
self.reader.row = self.rows[index]
return self.reader
def __repr__(self):
widths = {column: len(column) for column in self.columns}
lines = [" ".join(column for column in self.columns)]
for i, row in enumerate(self):
if i > 10:
break
lines.append(
" ".join(
str(row[column]).rjust(widths[column])[0 : widths[column]]
for column in self.columns
)
)
return "\n".join(lines)
class TableIter:
def __init__(self, table):
self.table = table
self.index = -1
def __iter__(self):
return self
def __next__(self):
self.index += 1
if self.index < len(self.table):
return self.table[self.index]
raise StopIteration
class RangeReader:
def __init__(self, table):
self.table = table
self.range = range(0)
def __len__(self):
return len(self.range)
def __getitem__(self, column):
return (self.table[i][column] for i in self.range)
class RowReader:
def __init__(self, columns):
self.columns = {column: i for i, column in enumerate(columns)}
self.row = None
def __getitem__(self, column):
return self.row[self.columns[column]]
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