hi...
using pysnmp, an 'snmp get' varBinds gives me an 'octet string' of values like:
1+1 Protection; East-West; Spiral Search; ODU Enable/Disable
I need to loop through these strings and see whether a particular string say, 'East-West' is present. I am not finding way to do this.
can this octet string be converted to some other form?
To see if an object can be converted to something else, you must find its class and look in the object's class documentation, so try this first:
print(type(obj))
print(obj.__class__)thanks for the reply...but it's not helping me :(
thanks for the reply...but it's not helping me :(
What did python print ? If you don't know the python class of your 'octet string', you won't be able to convert it to anything.
Looks like it has both repr and string form, so you should have not any difficulty finding data using those:
http://pysnmp.sourceforge.net/docs/2.x/asn1-octetstring-objects.html
@Grib....
Python gave me this:
<type 'instance'>
pysnmp.proto.rfc1902.OctetString
And
print('East-West ' in str(obj))@tonyjv:
print 'East-West ' in str(obj) gave me False
@Grib....
Python gave me this:
<type 'instance'>
pysnmp.proto.rfc1902.OctetString
With this output, google led me to http://twistedsnmp.sourceforge.net/pydoc/pysnmp.proto.rfc1155.html#OctetString . The class has __len__ and __getitem__ methods. so you should try
# obj is your octet string object
for i in range(len(obj)):
item = obj[i]
print i, item
print item.__class__to see what the object contains. Please post the output here (in code tags).
There is also a method get(), you could try
value = obj.get()
print value
print value.__class__<type 'str'>
22 W
<type 'str'>
23 e
<type 'str'>
24 s
<type 'str'>
25 t
<type 'str'>
26 ;
<type 'str'>
27
<type 'str'>
28 E
<type 'str'>
29 a
<type 'str'>
30 s
<type 'str'>
31 t
<type 'str'>
32 -
<type 'str'>
33 E
<type 'str'>
34 a
<type 'str'>
35 s
<type 'str'>
36 t
<type 'str'>
37 ;
<type 'str'>
38
<type 'str'>
39 S
<type 'str'>
40 p
<type 'str'>
41 i
<type 'str'>
42 r
<type 'str'>
43 a
<type 'str'>
44 l
<type 'str'>
45
<type 'str'>
46 S
<type 'str'>
47 e
<type 'str'>
48 a
<type 'str'>
49 r
<type 'str'>
50 c
<type 'str'>
51 h
<type 'str'>
52 ;
<type 'str'>
53
<type 'str'>
54 O
<type 'str'>
55 D
<type 'str'>
56 U
<type 'str'>
57
<type 'str'>
58 E
<type 'str'>
59 n
<type 'str'>
60 a
<type 'str'>
61 b
<type 'str'>
62 l
<type 'str'>
63 e
<type 'str'>
64 /
<type 'str'>
65 D
<type 'str'>
66 i
<type 'str'>
67 s
<type 'str'>
68 a
<type 'str'>
69 b
<type 'str'>
70 l
<type 'str'>
71 e
<type 'str'>
72 ;
<type 'str'>
73
<type 'str'>
74 M
<type 'str'>
75 a
<type 'str'>
76 n
<type 'str'>
77 u
<type 'str'>
78 a
<type 'str'>
79 l
<type 'str'>
80
<type 'str'>
81 F
<type 'str'>
82 r
<type 'str'>
83 e
<type 'str'>
84 q
<type 'str'>
85 u
<type 'str'>
86 e
<type 'str'>
87 n
<type 'str'>
88 c
<type 'str'>
89 y
<type 'str'>
90
<type 'str'>
91 E
<type 'str'>
92 n
<type 'str'>
93 t
<type 'str'>
94 r
<type 'str'>
95 y
<type 'str'>
96 ;
<type 'str'>
97
<type 'str'>
98 S
<type 'str'>
99 F
<type 'str'>
100 P
<type 'str'>
101
<type 'str'>
102 P
<type 'str'>
103 o
<type 'str'>
104 r
<type 'str'>
105 t
<type 'str'>
106 ;
<type 'str'>
107
<type 'str'>
108 A
<type 'str'>
109 d
<type 'str'>
110 a
<type 'str'>
111 p
<type 'str'>
112 t
<type 'str'>
113 i
<type 'str'>
114 v
<type 'str'>
115 e
<type 'str'>
116
<type 'str'>
117 C
<type 'str'>
118 o
<type 'str'>
119 d
<type 'str'>
120 i
<type 'str'>
121 n
<type 'str'>
122 g
<type 'str'>
123 /
<type 'str'>
124 M
<type 'str'>
125 o
<type 'str'>
126 d
<type 'str'>
127 u
<type 'str'>
128 l
<type 'str'>
129 a
<type 'str'>
130 t
<type 'str'>
131 i
<type 'str'>
132 o
<type 'str'>
133 n
<type 'str'>I got this and I am not able to make anything out of it:(
k......i can see that every element of string say, 'west' is treated as a seperate string
@Grib........
value=varBinds[0][1].get()
AttributeError: OctetString instance has no attribute 'get'
@Grib........
value=varBinds[0][1].get()
AttributeError: OctetString instance has no attribute 'get'
Did you try
print dir(obj)?
And simple
print (str(obj))
print(repr(obj))output?
Output for
print dir(obj)
['_AbstractSimpleAsn1Item__hashedValue', '__add__', '__cmp__', '__doc__', '__getitem__', '__hash__', '__init__', '__len__', '__module__', '__mul__', '__nonzero__', '__radd__', '__repr__', '__rmul__', '__str__', '_subtypeSpec', '_tagSet', '_value', '_verifySubtypeSpec', 'clone', 'defaultValue', 'getSubtypeSpec', 'getTagSet', 'getTypeMap', 'isSameTypeWith', 'isSuperTypeOf', 'prettyIn', 'prettyOut', 'prettyPrint', 'prettyPrinter', 'subtype', 'subtypeSpec', 'tagSet']and for..
1.print (str(obj))
2.print(repr(obj))is..
Null('')anything useful???
I found a solution :)
a=str(obj).split(';')
for vals in a:
print valsgives me:
1+1 Protection
East-West
East-East
Spiral Search
............
...........any better solutions are welcome...
I found a solution :)
a=str(obj).split(';') for vals in a: print valsgives me:
1+1 Protection East-West East-East Spiral Search ............ ...........any better solutions are welcome...
I think your solution is excellent, although I fail to see how str(obj) could print Null('') while str(obj).split(';') prints all this stuff :)
I am clueless too... thanx for all the inputs :)
Well, the __class__ helped me! Also, you can use .prettyPrint() on the object, store that into a string, then use normal string handling functions to search for your value.
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