* MRAB:
Alf P. Steinbach wrote:
Python 3.1.1 in Windows XP Prof:
<code filename="sum.v4.py" language="Py3">
def number_from_user( prompt ):
while True:
spec = input( prompt )
try:
return float( spec )
except ValueError:
s = "Sorry, '{}' is not a valid number spec. Try e.g.
'3.14'."
print( s.format( spec ) )
print()
print( "This program computes the sum of two numbers A and B." )
print()
a = number_from_user( "Number A, please: " )
b = number_from_user( "Number B, please: " )
sum = a + b
print()
print( "{} + {} = {}".format( a, b, sum ) )
</code>
To be thorough I tested the reaction to typing [Ctrl C] at the first
prompt. It then displayed the first part of traceback output,
<output part="1">
C:\Documents and Settings\Alf> sum.v4.py
This program computes the sum of two numbers A and B.
Number A, please: Traceback (most recent call last):
</output>
and seemingly hung for, I don't know, 20 seconds?, whereupon
Microsoft's "Please tell Bill Gates about it" box popped up; the
interpreter had crashed.
Regretfully declining the offer to tell Bill Gates, and this I don't
quite understand, possibly buffer thing?, one more line of output then
appeared:
<output part="2">
File "C:\Documents and Settings\Alf\sum.v4.py", line 13, in <module>
C:\Documents and Settings\Alf> _
</output>
In a normal traceback there are four more lines.
I thought I'd report this so I tried it several times more but unable
to reproduce: instead of above hang + crash + truncated traceback the
complete expected traceback appeared and the program terminated properly.
Can anyone reproduce?
I also have Python 3.1.1 on Windows XP Professional, but it doesn't
crash for me!
Does it happen every time?
No, that's the problem, I'm unable to reproduce consistently or nearly at all.
It just happened again (that's the second time), and this time I chose "Debug",
firing up Visual Studio 2003 as the Just-In-Time debugger. However, and this has
/never/ happened before, Visual Studio did not manage to catch the process state
and reported the program as terminated.
Here's the contents of the Visual Studio output pane:
<vsinfo>
'python.exe': Loaded 'C:\Program Files\cpython\python31\python.exe', No symbols
loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\ntdll.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\kernel32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\python31.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\user32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\gdi32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\advapi32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\rpcrt4.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\shell32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\msvcrt.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\shlwapi.dll', No symbols loaded.
'python.exe': Loaded
'C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_6f74963e\msvcr90.dll',
No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\imm32.dll', No symbols loaded.
'python.exe': Loaded
'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2982_x-ww_ac3f9c03\comctl32.dll',
No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\comctl32.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\version.dll', No symbols loaded.
'python.exe': Loaded 'C:\WINDOWS\SYSTEM32\apphelp.dll', No symbols loaded.
The thread 'Win32 Thread' (0xd54) has exited with code -1073740777 (0xc0000417).
The program '[3292] python.exe: Native' has exited with code -1073740777
(0xc0000417).
</vsinfo>
The error code 0xc0000417 is some custom one, not a standard Windows code.
The crash address reported by the tell-Bill box was a low one with four zeroes
at front, but I didn't note it because that box doesn't support copy to
clipboard and I was sure I'd get it in Visual Studio, which I didn't.
Is there any DLL above that shouldn't be there, like malware (it's the only
thing I can think of, a program shouldn't retain state between invocations)?
Cheers,
- Alf
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