Python dll function are not found

Question

I have wrote code as below to communicate with a dll.i have registered this dll.

from ctypes import cdll
# give location of dll
mydll = cdll.LoadLibrary("C:\Windows\SysWOW64\zkemkeeper.dll")
ip = "172.16.16.70"
port = "4370"
mydll.Connect_Net(ip,port)

I get the following error whenevr i execute it.

Traceback (most recent call last):
  File "C:\Python34\fetch.py", line 6, in <module>
    mydll.Connect_Net(ip,port)
  File "C:\Python34\lib\ctypes\__init__.py", line 364, in __getattr__
    func = self.__getitem__(name)
  File "C:\Python34\lib\ctypes\__init__.py", line 369, in __getitem__
    func = self._FuncPtr((name_or_ordinal, self))
AttributeError: function 'Connect_Net' not found

Also i m able to communicate with this dll and access its function using PHP.Can anyone let me know what can be the issue and how to solve it.

fish2000 · Accepted Answer · 2015-12-08 19:02:49Z

1

Try this Python snippet:

from win32com.client import Dispatch
zk = Dispatch("zkemkeeper.ZKEM")
ip = "172.16.16.70"
port = "4370"
zk.Connect_Net(IP_address, port)

edited Dec 8, 2015 at 19:02

fish2000

4,4352 gold badges41 silver badges80 bronze badges

answered Dec 8, 2015 at 17:37

mike_z

112 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Nathaniel Ford Over a year ago

You should explain why this addresses the question.

mike_z Over a year ago

He wants to connect to ZK terminal using SDK.

David Heffernan · Accepted Answer · 2015-01-21 13:29:26Z

0

AttributeError: function 'Connect_Net' not found

This means that the DLL does not export a function named 'Connect_Net'. Perhaps you got the name wrong, or the DLL failed to export the function somehow.

Some other comments:

Using the backslash escape character is running the gauntlet. Escape the backslash, use a raw string literal, or use os.path.join.
Don't modify the system directories. You should put your DLL elsewhere.

answered Jan 21, 2015 at 13:29

David Heffernan

616k46 gold badges1.1k silver badges1.5k bronze badges

2 Comments

Kaushil Rambhia Over a year ago

if this function does not exist in DLL than how php is able to communicate with it and access connect_net function,Also it is no me who is copying dll in system directories its our hardware (biometric) machine provider who copies dll to system directory.

David Heffernan Over a year ago

Connect_Net and connect_net are different names. With respect there is no explanation other than what appears in my answer.

Collectives™ on Stack Overflow

Python dll function are not found

2 Answers 2

2 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related