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import re, sys, traceback, json
import phys
file_format_version = 2
def save_system(path, system):
ser = dict()
ser["version"] = file_format_version
ser["ignore"] = system.ignore
ser["elements"] = []
for pol in system.elements:
el = {
"type": pol.type,
"angle": pol.angle,
"delta": pol.delta,
"ref": pol.ref,
"t1": pol.t1,
"t2": pol.t2
}
ser["elements"].append(el)
with open(path, "w") as fd:
fd.write(json.dumps(ser))
def open_system(path):
system = phys.System()
with open(path, "r") as fd:
ser = json.loads(fd.read())
if ser["version"] != file_format_version:
raise ValueError("Bad file version: expected %d, found %d" \
% (file_format_version, ser["version"]))
system.ignore = ser["ignore"]
for el in ser["elements"]:
pol = phys.Polarizer(str(el["type"]))
pol.angle = float(el["angle"])
pol.delta = float(el["delta"])
pol.ref = el["ref"]
pol.t1 = float(el["t1"])
pol.t2 = float(el["t2"])
system.elements.append(pol)
return system
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