#-----------------------------------------------------------------------
# imports
#-----------------------------------------------------------------------
from hep import test
import hep.expr
import hep.table
#-----------------------------------------------------------------------
# test
#-----------------------------------------------------------------------
# Open the table.
table = hep.table.open("table3.table")
selection = hep.expr.parse("index % 4 == 3")
for row in table.select(selection):
test.compare(row["_index"] % 4, 3)
#-----------------------------------------------------------------------
# imports
#-----------------------------------------------------------------------
import hep.table
from hep.test import compare
#-----------------------------------------------------------------------
# test
#-----------------------------------------------------------------------
schema = hep.table.Schema()
table = hep.table.create("index1.table", schema)
for i in range(10):
table.append()
del table
table = hep.table.open("index1.table")
index_expr = table.compile("_index")
for i in range(9, -1, -1):
row = table[i]
compare(row["_index"], i)
compare(index_expr.evaluate(row), i)
for row in table.select("_index % 3 == 1"):
compare(row["_index"] % 3, 1)
#-----------------------------------------------------------------------
# Create a new table.
schema = hep.table.Schema()
schema.addColumn("c", "complex128")
table = hep.table.create("complex1.table", schema)
# Fill in some rows.
values1 = []
values2 = []
for i in xrange(0, 1000):
value = random() + random() * 1j
table.append(c=value)
if abs(value) > 1:
values1.append(value)
if value.real > 0.5 and value.imag < -0.5:
values2.append(value)
# Write and close the table.
del schema, table
# Reopen the table.
table = hep.table.open("complex1.table")
# Check rows.
for row, value in zip(table.select("abs(c) > 1"), values1):
compare(row["c"], value)
for row, value in zip(table.select("c.real > 0.5 and c.imag < -0.5"), values2):
compare(row["c"], value)