When MacOS is updated from Homebrew any Python2 YDK application fails #837
Description
Current Behavior
When MacOS is updated from Homebrew, which is normal and expected behavior, any run of YDK Python2 based application fails with error:
Fatal Python error: PyThreadState_Get: no current thread
This is known and well documented issue, which has few suggested workaround processes. These solution must be tested on MacOS platform and well documented in YDK documentation along with suggested workaround.
The symptoms and workaround are also documented here.
Steps to Reproduce
Update MacOS from Homebrew using command:
$ brew update
Install ydk and IOS XR bundle:
$ pip install ydk
$ pip install ydk-models-cisco-ios-xr
Copy hello-ydk.py from below and try to run it:
$ python hello-ydk.py
Observe the error.
Your script
# import providers, services and models
from ydk.services import CRUDService
from ydk.providers import NetconfServiceProvider
from ydk.models.cisco_ios_xr import Cisco_IOS_XR_shellutil_oper as xr_shellutil_oper
from datetime import timedelta
def enable_logging(level):
import logging
log = logging.getLogger('ydk')
log.setLevel(level)
handler = logging.StreamHandler()
formatter = logging.Formatter(("%(asctime)s - %(name)s - %(levelname)s - %(message)s"))
handler.setFormatter(formatter)
log.addHandler(handler)
if __name__ == "__main__":
"""Main execution path"""
enable_logging(logging.INFO)
# create NETCONF session
provider = NetconfServiceProvider(address="192.168.122.169",
port=830,
username="admin",
password="admin",
protocol="ssh")
# create CRUD service
crud = CRUDService()
# create system time object
system_time = xr_shellutil_oper.SystemTime()
# read system time from device
system_time = crud.read(provider, system_time)
# print system uptime
print("System uptime is " +
str(timedelta(seconds=system_time.uptime.uptime)))
exit()
Logs
ANTHONYP-M-K0ZN:ydk-py-samples anthonyp$ ./hello-ydk.py
Fatal Python error: PyThreadState_Get: no current thread
Abort trap: 6
System Information
YDK-0.7.3 + cisco-ios-xr bundle