/usr/share/doc/python-tables/examples/nested1.py is in python-tables-doc 3.4.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | # Example to show how nested types can be dealed with PyTables
# F. Alted 2005/05/27
from __future__ import print_function
import random
import tables
fileout = "nested1.h5"
# An example of enumerated structure
colors = tables.Enum(['red', 'green', 'blue'])
def read(file):
fileh = tables.open_file(file, "r")
print("table (short)-->", fileh.root.table)
print("table (long)-->", repr(fileh.root.table))
print("table (contents)-->", repr(fileh.root.table[:]))
fileh.close()
def write(file, desc, indexed):
fileh = tables.open_file(file, "w")
table = fileh.create_table(fileh.root, 'table', desc)
for colname in indexed:
table.colinstances[colname].create_index()
row = table.row
for i in range(10):
row['x'] = i
row['y'] = 10.2 - i
row['z'] = i
row['color'] = colors[random.choice(['red', 'green', 'blue'])]
row['info/name'] = "name%s" % i
row['info/info2/info3/z4'] = i
# All the rest will be filled with defaults
row.append()
fileh.close()
# The sample nested class description
class Info(tables.IsDescription):
_v_pos = 2
Name = tables.UInt32Col()
Value = tables.Float64Col()
class Test(tables.IsDescription):
"""A description that has several columns."""
x = tables.Int32Col(shape=2, dflt=0, pos=0)
y = tables.Float64Col(dflt=1.2, shape=(2, 3))
z = tables.UInt8Col(dflt=1)
color = tables.EnumCol(colors, 'red', base='uint32', shape=(2,))
Info = Info()
class info(tables.IsDescription):
_v_pos = 1
name = tables.StringCol(10)
value = tables.Float64Col(pos=0)
y2 = tables.Float64Col(dflt=1, shape=(2, 3), pos=1)
z2 = tables.UInt8Col(dflt=1)
class info2(tables.IsDescription):
y3 = tables.Float64Col(dflt=1, shape=(2, 3))
z3 = tables.UInt8Col(dflt=1)
name = tables.StringCol(10)
value = tables.EnumCol(colors, 'blue', base='uint32', shape=(1,))
class info3(tables.IsDescription):
name = tables.StringCol(10)
value = tables.Time64Col()
y4 = tables.Float64Col(dflt=1, shape=(2, 3))
z4 = tables.UInt8Col(dflt=1)
# Write the file and read it
write(fileout, Test, ['info/info2/z3'])
read(fileout)
print("You can have a look at '%s' output file now." % fileout)
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