Bugs item #1523465, was opened at 2006-07-16 13:40
Message generated for change (Comment added) made by tim_one
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Category: Threads
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: roee88 (roee88)
Assigned to: Nobody/Anonymous (nobody)
Summary: threading.Thread Traceback
Initial Comment:
I'm using the following line in my application:
Thread(target = open_new(dest)).start()
dest is file path set by user.
Got this traceback with python 2.5:
File "C:\python25\lib\threading.py", line 460, in
__boostrap
self.run()
File "C:\python25\threading.py, line 440, in run
self.__target(*self.__args, **self.kwargs)
TypeError: 'bool' object is not callable
Worked well with python 2.4 .
OS: windows XP 32 bit.
Searched for a similar bug report but couldn't find
one, sorry if it already been reported.
----------------------------------------------------------------------
>Comment By: Tim Peters (tim_one)
Date: 2006-07-16 16:04
Message:
Logged In: YES
user_id=31435
Why do you imagine it makes sense to pass a boolean as the
target? What do you think that should do? As the message
said, a bool object is not callable, and, from the docs:
"""
`target` is the callable object to be invoked by the `run()`
method. Defaults to None, meaning nothing is called.
"""
It doesn't make sense to pass True (or, e.g., an integer,
string, list, dict, or anything else that isn't callable).
Note that it's not true that Python 2.4 (or any other
version of Python) accepted a boolen here either; e.g.,
$ python
Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more
information.
>>> import threading
>>> threading.Thread(target=True).start()
>>> Exception in thread Thread-2:
Traceback (most recent call last):
File "C:\Python24\lib\threading.py", line 442, in __bootstrap
self.run()
File "C:\Python24\lib\threading.py", line 422, in run
self.__target(*self.__args, **self.__kwargs)
TypeError: 'bool' object is not callable
----------------------------------------------------------------------
Comment By: roee88 (roee88)
Date: 2006-07-16 15:18
Message:
Logged In: YES
user_id=1111143
open_new is imported from webbrowser and it returns a
boolean (True in that case).
This shouldn't conflict with the Thread target.
Just as a note, except for the Traceback everything works
well. The dest does open.
----------------------------------------------------------------------
Comment By: Tim Peters (tim_one)
Date: 2006-07-16 15:01
Message:
Logged In: YES
user_id=31435
What does `open_new` return? What does
print type(open_new(dest))
display in a failing case?
----------------------------------------------------------------------
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