File Creation Not Working In A Thread Class?

[Arnaud Delobelle]

Arnaud Delobelle <arnodel at googlemail.com> writes:

> bc90021 <python at bc90021.net> writes:
>
>> On Sun, 11 May 2008 18:36:25 +0100, Arnaud Delobelle wrote:
>>
>>> bc90021 <python at bc90021.net> writes:
>>> 
>>>> Hi All,
>>>>
>>>> Thanks in advance for any and all help!
>>>>
>>>> I have this code:
>>>>
>>>> g = open(fileName, 'a')
>>>>
>>>> where fileName is defined before the line it's used in.  It works fine
>>>> when I use it outside a thread class.
>>>>
>>>> When I put the same line in a thread class, it no longer works, and I
>>>> get an error:
>>>>
>>>> IOError: [Errno 2] no such file u'fileName'
>>>>
>>>>
>>> It's telling you that you haven't got a file called 'fileName'. Posting
>>> the code that triggers this error would allow people to diagnose the
>>> error accurately rather than guessing.
>>
>> f = open(otherFile).readlines()
>> for i in len(f):
>> 	for c in range(0,24,1):
>> 		if os.name == "posix":
>> 			tempfileName = "\"proctemp/" + self.matrix[c][0] 
>> + "_tmp_" + fileName + ".txt\""
>>    	if re.search(f[i], pattern):
>> 		g = open(tempfileName, 'a')
>> 		g.write(f[i])
>>
>>
>> This code works *perfectly* unless I put it in a class that inherits from 
>> threading.Thread.  In the thread class, everything works (I can see the 
>> "c" value, and I can print out each line in "f[i]", it's just that the g 
>> = open line doesn't work.
>
> It's difficult to know what's wrong with the code you posted because:
>
> * it is not self-contained: otherFile, fileName, pattern are names
>   which you do not define;
>
> * the IOError you reported earlier can't arise as a result of running
>   this code.

Correction: it can, if otherFile == u'fileName'

So I put 1000 rupees on this being the cause of the error :)

-- 
Arnaud