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Error in importing "asammdf" in Robotframework

i have written a custom Library in python, which imports a package named "asammdf". But, when i import my custom Library in Robot code, it shows error in importing "asammdf" in python. It says: "Error in File *.robot. Importing test Library *.py failed. Import Error: DLL load failed: the specified module could not be found."

"asammdf" package is available in one of the PYTHONPATH it mentions during executions.

Can someone please help me doing this and let me know, what have i done wrong? My python File (trialRobot.py):

import asammdf
...
...
...

My robot file (TC1.robot):

*** Settings ***
Library trialRobot.py

*** Test Cases ***
TC1
   DO THIS
   DO THAT

The error it shows is:

[ ERROR ] Error in file 'G:\AutomationRobotFramework\RobotAutomationFramework\TC1.robot': Im
porting test library 'G:\AutomationRobotFramework\RobotAutomationFramework\trialRobot.py' fa
iled: ImportError: DLL load failed: The specified module could not be found.
Traceback (most recent call last):
  File "G:\AutomationRobotFramework\RobotAutomationFramework\trialRobot.py", line 1, in <mod
ule>
    import asammdf
  File "g:\automationrobotframework\venv\lib\site-packages\asammdf\__init__.py", line 15, in
 <module>
    from .blocks.mdf_v2 import MDF2
  File "g:\automationrobotframework\venv\lib\site-packages\asammdf\blocks\mdf_v2.py", line 4
, in <module>
    from .mdf_v3 import MDF3
  File "g:\automationrobotframework\venv\lib\site-packages\asammdf\blocks\mdf_v3.py", line 4
4, in <module>
    from ..signal import Signal
  File "g:\automationrobotframework\venv\lib\site-packages\asammdf\signal.py", line 9, in <m
odule>
    from .blocks.utils import MdfException, extract_cncomment_xml, SignalSource
  File "g:\automationrobotframework\venv\lib\site-packages\asammdf\blocks\utils.py", line 27
, in <module>
    from cchardet import detect
  File "g:\automationrobotframework\venv\lib\site-packages\cchardet\__init__.py", line 1, in
 <module>
    from cchardet import _cchardet

PYTHONPATH:
  G:\AutomationRobotFramework\venv\Scripts\robot.exe
  C:\Program Files\Python37\python37.zip
  C:\Program Files\Python37\DLLs
  C:\Program Files\Python37\lib
  C:\Program Files\Python37
  g:\automationrobotframework\venv
  g:\automationrobotframework\venv\lib\site-packages
  g:\automationrobotframework\venv\lib\site-packages\pip-19.0.3-py3.7.egg

But, the asammdf package is installed in python using pip without any name or location conflict. It is installed only once and in the folder, where pip installs by default. Thanks in advance.

Solution

  • You need to install cchardet 2.1.5