run_simulation

#!/usr/bin/env python3

##import re
from numpy import sqrt
from docopt import docopt
from inform import Error, Inform, comment, display, done, fatal, os_error
from psf_utils import PSF
from quantiphy import Quantity
from shlib import Run, render_command, set_prefs as shlib_set_prefs, to_path

#####################
# Change a parameter in an existing netlist
#####################

# open seed file and chage parameter
fin = open("source_models/cs_amplifier.scs", "rt")
data = fin.read()
param_change = "1.2"
# Replace a string by another
data = data.replace("[PARAMETER]", param_change)
fin.close()

# Generate input.scs with new param 
out_file = "input" + ".scs"
fout = open(out_file, "wt")
fout.write(data)
fout.close()

#####################
# Simulte netlist
#####################

spectre_exe = "spectre"  # Spectre executable
netlist_file = to_path(out_file)  # Spectre netlist file
log_file = netlist_file.with_suffix(".log")  # Spectre logfile
results_dir = netlist_file.with_suffix(".raw")  # simulation results directory

## Analysis type
psf_file_dc = results_dir / "dc1.dc"  # Input PSF file for dc simulation
psf_file_ac = results_dir / "ac1.dc"  # Input PSF file for ac simulation

## Simulation Command
sim_cmd = (spectre_exe, "=log", log_file, "-format", "psfascii", netlist_file, "-64")

## simulate 
try:
    comment("\nRunning:")
    comment("   ", render_command(sim_cmd, {"=log": 1, "-format": 1}))
    spectre = Run(sim_cmd, "soEW0")
except Error as e:
    if e.stdout:
        comment(e.stdout)
    e.terminate(culprit=spectre_exe, codicil=f"See {log_file} for more information.")