behavioral source expression not passed correctly on linux shared #172
Description
Environment (OS, Python version, PySpice version, simulator)
ubuntu 19.04 python 3.7 PySpice 1.3.2 ngspice 30
Expected Behaviour
Actual Behaviour
Steps to reproduce the behaviour
from pylab import *
import PySpice.Logging.Logging as Logging
logger = Logging.setup_logging()
from PySpice.Spice.Netlist import Circuit
from PySpice.Unit import *
from PySpice.Spice.BasicElement import BehavioralSource
circuit = Circuit("Pulse")
source = circuit.BehavioralSource('source', 'in', circuit.gnd,
voltage_expression = "time^4*exp(-1000*time)")
circuit.R(1, 'in', 'out', u_kOhm(9))
circuit.R(2, 'out', circuit.gnd, u_kOhm(1))
simulator = circuit.simulator(simulator="ngspice-shared")
# the commented out version next line works
#simulator = circuit.simulator(simulator="ngspice-subprocess")
transient = simulator.transient(step_time=u_ms(1e-3), end_time=u_ms(20))
clf()
grid(True)
plot(transient['out'].abscissa, transient['out'])