wrapper around pytables/hd5f to simplify using structured data
Project description
This module removes some of the boiler-plate code required to use the excellent pytables module to save and access structured data.
Example Usage:
>>> from simpletable import SimpleTable >>> import tables
define a table as a subclass of simple table.
>>> class ATable(SimpleTable): ... x = tables.Float32Col() ... y = tables.Float32Col() ... name = tables.StringCol(16)
instantiate with: args: filename, tablename
>>> tbl = ATable('test_docs.h5', 'atable1')
insert as with pytables:
>>> row = tbl.row >>> for i in range(50): ... row['x'], row['y'] = i, i * 10 ... row['name'] = "name_%i" % i ... row.append() >>> tbl.flush()
there is also insert_many() method with takes an iterable of dicts with keys matching the colunns (x, y, name) in this case.
query the data (query() alias of tables’ readWhere()
>>> tbl.query('(x > 4) & (y < 70)') #doctest: +NORMALIZE_WHITESPACE array([('name_5', 5.0, 50.0), ('name_6', 6.0, 60.0)], dtype=[('name', '|S16'), ('x', '<f4'), ('y', '<f4')])
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
simpletable-0.1.tar.gz
(2.7 kB
view hashes)