Exception stacktrace generated from passing an invalid target to Thread(...).start() does not include the line calling the start() method #145242
Description
import threading,sys
print(sys.version)
def ThreadMain():
print("howdy cowboy")
ThreadMaiin=True
myThread=threading.Thread(target=ThreadMaiin)
myThread.start() # @note Ideally, the Stacktrace generated by the exception raised as a result of this line would include the line itselfPrints the following to console:
3.14.3 (tags/v3.14.3:323c59a, Feb 3 2026, 16:04:56) [MSC v.1944 64 bit (AMD64)]
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Users\olliv\AppData\Local\Programs\Python\Python314\Lib\threading.py", line 1082, in _bootstrap_inner
self._context.run(self.run)
~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "C:\Users\olliv\AppData\Local\Programs\Python\Python314\Lib\threading.py", line 1024, in run
self._target(*self._args, **self._kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'bool' object is not callable