Python解析xml文件，此实例将xml设置为模版（from lxml import etree）
xml文件（template.xml）
S7-200
Siemens
Rough simulation of a basic Siemens S7-200 CPU with 2 slaves
HTTP, MODBUS, s7comm, SNMP
the conpot team
"Mouser Factory"
"Technodrome"
"Siemens, SIMATIC, S7-200"
conpot.emulators.misc.uptime.Uptime
"0.0"
"Siemens AG"
"CP 443-1 EX40"
"Venus"
"72"
[random.randint(0,1) for b in range(0,128)]
[random.randint(0,1) for b in range(0,32)]
[random.randint(0,1) for b in range(0,128)]
[random.randint(0,1) for b in range(0,32)]
[random.randint(0,1) for b in range(0,128)]
[random.randint(0,1) for b in range(0,32)]
[random.randint(0,1) for b in range(0,8)]
[0 for b in range(0,32)]
"Original Siemens Equipment"
"88111222"
"IM151-8 PN/DP CPU"
""
解析core.template
template_xml = os.path.join(package_directory, 'templates', folder, 'template.xml')
if os.path.isfile(template_xml):
template_unit = template_vendor = template_description = template_protocols = template_creator = 'N/A'
dom_template = etree.parse(template_xml)
template_details = dom_template.xpath('//core/template/*')
if template_details:
# retrieve all template details
for entity in template_details:
if entity.attrib['name'] == 'unit':
template_unit = entity.text
elif entity.attrib['name'] == 'vendor':
template_vendor = entity.text
elif entity.attrib['name'] == 'description':
template_description = entity.text
elif entity.attrib['name'] == 'protocols':
template_protocols = entity.text
elif entity.attrib['name'] == 'creator':
template_creator = entity.text
print(" --template {0}".format(folder))
print(" Unit: {0} - {1}".format(template_vendor, template_unit))
print(" Desc: {0}".format(template_description))
print(" Protocols: {0}".format(template_protocols))
print(" Created by: {0}\n".format(template_creator))结果
--------------------------------------------------
Available templates:
--------------------------------------------------
--template IEC104
Unit: Siemens - S7-300
Desc: Creates a simple device for IEC 60870-5-104
Protocols: IEC104, SNMP
Created by: Patrick Reichenberger
--template default
Unit: Siemens - S7-200
Desc: Rough simulation of a basic Siemens S7-200 CPU with 2 slaves
Protocols: HTTP, MODBUS, s7comm, SNMP
Created by: the conpot team
--template proxy
Unit: None - Proxy
Desc: Sample template that demonstrates the proxy feature.
Protocols: Proxy
Created by: the conpot team
--template guardian_ast
Unit: Guardian - Guardian AST tank-monitoring system
Desc: Guardian AST tank-monitoring system
Protocols: guardian_ast
Created by: the conpot team
--template ipmi
Unit: IPMI - 371
Desc: Creates a simple IPMI device
Protocols: IPMI
Created by: Lukas Rist
--template kamstrup_382
Unit: Kamstrup - 382
Desc: Register clone of an existing Kamstrup 382 smart meter
Protocols: Kamstrup
Created by: Johnny Vestergaard解析core.databus
import random
from lxml import etree
def set_value(self, key, value):
logger.debug('DataBus: Storing key: [%s] value: [%s]', key, value)
self._data[key] = value
# notify observers
if key in self._observer_map:
gevent.spawn(self.notify_observers, key)
def initialize(self, config_file):
self.reset()
assert self.initialized.isSet() is False
logger.debug('Initializing databus using %s.', config_file)
dom = etree.parse(config_file)
entries = dom.xpath('//core/databus/key_value_mappings/*')
for entry in entries:
key = entry.attrib['name']
value = entry.xpath('./value/text()')[0].strip()
value_type = str(entry.xpath('./value/@type')[0])
assert key not in self._data
print ('Initializing key:%s value:%s as a value_type:%s.', key, value, value_type)
logging.debug('Initializing %s with %s as a %s.', key, value, value_type)
if value_type == 'value':
self.set_value(key, eval(value))
elif value_type == 'function':
namespace, _classname = value.rsplit('.', 1)
params = entry.xpath('./value/@param')
module = __import__(namespace, fromlist=[_classname])
_class = getattr(module, _classname)
if len(params) > 0:
# eval param to list
params = eval(params[0])
self.set_value(key, _class(*(tuple(params))))
else:
self.set_value(key, _class())
else:
raise Exception('Unknown value type: {0}'.format(value_type))
self.initialized.set()结果
Initializing key:%s value:%s as a value_type:%s. FacilityName "Mouser Factory" value
Initializing key:%s value:%s as a value_type:%s. SystemName "Technodrome" value
Initializing key:%s value:%s as a value_type:%s. SystemDescription "Siemens, SIMATIC, S7-200" value
Initializing key:%s value:%s as a value_type:%s. Uptime conpot.emulators.misc.uptime.Uptime function
Initializing key:%s value:%s as a value_type:%s. sysObjectID "0.0" value
Initializing key:%s value:%s as a value_type:%s. sysContact "Siemens AG" value
Initializing key:%s value:%s as a value_type:%s. sysName "CP 443-1 EX40" value
Initializing key:%s value:%s as a value_type:%s. sysLocation "Venus" value
Initializing key:%s value:%s as a value_type:%s. sysServices "72" value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave0BlockA [random.randint(0,1) for b in range(0,128)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave0BlockB [random.randint(0,1) for b in range(0,32)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave255BlockA [random.randint(0,1) for b in range(0,128)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave255BlockB [random.randint(0,1) for b in range(0,32)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave1BlockA [random.randint(0,1) for b in range(0,128)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave1BlockB [random.randint(0,1) for b in range(0,32)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave2BlockC [random.randint(0,1) for b in range(0,8)] value
Initializing key:%s value:%s as a value_type:%s. memoryModbusSlave2BlockD [0 for b in range(0,32)] value
Initializing key:%s value:%s as a value_type:%s. Copyright "Original Siemens Equipment" value
Initializing key:%s value:%s as a value_type:%s. s7_id "88111222" value
Initializing key:%s value:%s as a value_type:%s. s7_module_type "IM151-8 PN/DP CPU" value
Initializing key:%s value:%s as a value_type:%s. empty "" value