python-2.7 - PYSNMP : TypeError: setComponentByType() got multiple values for keyword argument 'verifyConstraints'

Question

面临 PYSNMP 4.3.3 的新问题。 Python 2.7.13。使用 SNMP GET 和 Getnext:Pysnmp 4.3.2 也可以正常工作。实际上，当它涉及虚拟环境时，我正在观察这个问题。在虚拟环境中，即使我将 Pysnmp 从 4.3.3 降级到 4.3.2，问题也会重现。

有人可以告诉我我缺少什么吗？

类型错误:setComponentByType() 获得关键字参数“verifyConstraints”的多个值

>>> from pysnmp.hlapi import *
>>> errorIndication, errorStatus, errorIndex, varBinds = next(
...     getCmd(SnmpEngine(),
...            CommunityData('public'),
...            UdpTransportTarget(('127.0.0.1', 161)),
...            ContextData(),
...            ObjectType(ObjectIdentity('SNMPv2-MIB','sysDescr', 0)))
... )
Traceback (most recent call last):
  File "<stdin>", line 6, in <module>
  File "/home/sourav/MyWorkSpace/tempproject_1/lib/python2.7/site-packages/pysnmp/hlapi/asyncore/sync/cmdgen.py", line 111, in getCmd
    lookupMib=options.get('lookupMib', True)))
  File "/home/sourav/MyWorkSpace/tempproject_1/lib/python2.7/site-packages/pysnmp/hlapi/asyncore/cmdgen.py", line 131, in getCmd
    options.get('cbFun'), options.get('cbCtx'))
  File "/home/sourav/MyWorkSpace/tempproject_1/lib/python2.7/site-packages/pysnmp/entity/rfc3413/cmdgen.py", line 214, in sendVarBinds
    v2c.apiPDU.setVarBinds(reqPDU, varBinds)
  File "/home/sourav/MyWorkSpace/tempproject_1/lib/python2.7/site-packages/pysnmp/proto/api/v1.py", line 136, in setVarBinds
    varBindList.getComponentByPosition(idx), varBind
  File "/home/sourav/MyWorkSpace/tempproject_1/lib/python2.7/site-packages/pysnmp/proto/api/v1.py", line 43, in setOIDVal
    verifyConstraints=False)
TypeError: setComponentByType() got multiple values for keyword argument 'verifyConstraints'
>>> 

与旧式也一样:

>>> from pysnmp.entity.rfc3413.oneliner import cmdgen
>>> cmdGen = cmdgen.CommandGenerator()
>>> errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(cmdgen.CommunityData('public'),cmdgen.UdpTransportTarget(('127.0.0.1', 161), timeout=60, retries=3),cmdgen.MibVariable('SNMPv2-MIB','sysDescr',0))

在下面的链接中，请引用最后两条评论。 https://github.com/home-assistant/home-assistant/issues/5790

使用的包:

appdirs==1.4.2
packaging==16.8
ply==3.10
pyasn1==0.2.3
pycryptodome==3.4.5
pyparsing==2.1.10
pysmi==0.0.7
pysnmp==4.3.3
six==1.10.0

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++更新:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++将 Pyasn1 从 pyasn1==0.2.3 降级到 0.1.9 后，代码似乎正常工作。但问题是，当全新安装 Pysnmp 4.3.3 时，它会采用 Pyasn1==0.2.3 并且失败。

Answer 1

这是 pyasn1/pysnmp 交互中的一个不幸的回归。

您可以通过将 pyasn1 降级到 0.2.2 或从 git master 获取 pysnmp 来解决此问题或者稍等一下，直到修复的 pysnmp 出来。