python Programming Glossary: causeHow do I concatenate files in Python? http://stackoverflow.com/questions/1001538/how-do-i-concatenate-files-in-python together is easy... however I am not sure if that will cause a continuous play I think it might if the files are using the..
http://stackoverflow.com/questions/11007627/python-variable-declaration part of the object but we can still look them up via x because of some magic that Python does behind the scenes. When we look.. whenever we look up the .name of an instance because the instance's attribute will be found first. One last caveat.. in Python. Instead you create a new string 'hi mom' and cause a to stop being a name for 'hi ' and start being a name for..
How can I profile a SQLAlchemy powered application? http://stackoverflow.com/questions/1171166/how-can-i-profile-a-sqlalchemy-powered-application a cartesian product as a result of an incomplete join can cause this issue. Yet another issue is time spent within type handling..
Should Python import statements always be at the top of a module? http://stackoverflow.com/questions/128478/should-python-import-statements-always-be-at-the-top-of-a-module Putting the imports at the top of the module is fine because it's a trivial cost that's only paid once. Putting the imports.. only paid once. Putting the imports within a function will cause calls to that function to take longer. So if you care about..
Proper way to declare custom exceptions in modern Python? http://stackoverflow.com/questions/1319615/proper-way-to-declare-custom-exceptions-in-modern-python an Exception object that can include extra data about the cause of the error a string maybe also some other arbitrary object..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application kill or in python os.kill pid signal.SIGUSR1 This will cause the program to break to a python console at the point it is..
Keyboard Interrupts with python's multiprocessing Pool http://stackoverflow.com/questions/1408356/keyboard-interrupts-with-pythons-multiprocessing-pool externally. I want to be able to press ^C at any time and cause all of the processes to exit gracefully. python multiprocessing..
Variables inside and outside of a class __init__() function http://stackoverflow.com/questions/1537202/variables-inside-and-outside-of-a-class-init-function main worry is that I'll be using it one way when that'll cause me problems further down the road currently I use the init call..
Force another program's standard output to be unbuffered using Python http://stackoverflow.com/questions/1544050/force-another-programs-standard-output-to-be-unbuffered-using-python with problematic details. You can use LD_PRELOAD to cause the external application to load a dynamic library which contains..
Simple wrapping of C code with cython http://stackoverflow.com/questions/3046305/simple-wrapping-of-c-code-with-cython but it can be confusing simple mistakes in a .pyx can cause pages of obscure error messages from g compile and link. See..
Which is faster in Python: x**.5 or math.sqrt(x)? http://stackoverflow.com/questions/327002/which-is-faster-in-python-x-5-or-math-sqrtx of how Python code works I sent Guido van Rossum an email cause I really wanted to know the differences in these methods. My..
How to bind self events in Tkinter Text widget after it will binded by Text widget? http://stackoverflow.com/questions/3501849/how-to-bind-self-events-in-tkinter-text-widget-after-it-will-binded-by-text-widg example disallow certain keystrokes changing the order may cause those bindings to stop working. By introducing a new bindtag.. always seems to be one character behind. Again this is because the widget binding happens before the class binding puts the..
How do I determine the size of an object in Python? http://stackoverflow.com/questions/449560/how-do-i-determine-the-size-of-an-object-in-python type does not provide means to retrieve the size and would cause a TypeError . getsizeof calls the object 䏭 __sizeof__ method..
Python import MySQLdb error - Mac 10.6 http://stackoverflow.com/questions/4730787/python-import-mysqldb-error-mac-10-6 MySQLdb and MySQL libraries in OS X 10.6 is a very common cause of frustration lots of questions about it here on SO and elsewhere...
UnicodeDecodeError, invalid continuation byte http://stackoverflow.com/questions/5552555/unicodedecodeerror-invalid-continuation-byte 'utf 8' u' u9000' But that 䏭 just the mechanical cause of the exception. In this case you have a string that is almost..
Why is it “Easier to ask forgiveness than permission” in python, but not in Java? [closed] http://stackoverflow.com/questions/6092992/why-is-it-easier-to-ask-forgiveness-than-permission-in-python-but-not-in-java Ask forgiveness than permission but not in Java Is it because of the difference in language Difference in user base Or is.. exception objects is expensive. This is largely because the default behaviour of an exception constructor is to capture.. is code smell is that people typically resort to this because they are getting unexpected NPEs and the catch is an attempt..
int((0.1+0.7)*10) = 7 in several languages. How to prevent this? http://stackoverflow.com/questions/6439140/int0-10-710-7-in-several-languages-how-to-prevent-this languages. I have a very basic knowledge about how it's caused and I'd like some detailed explanation but when I think of.. years the question is how can I determine Hey this might cause a riddiculous bug I'd better use arbitrary precision functions..
Creating a singleton in python http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python methods of the same name on base classes using super because they will recurse. This means you can't customize __new__ and.. will be executed every time you call SubClassOfSingleton because it is responsible for calling the method that returns the stored.. to implement a singleton. A singleton is special because is created only once and a metaclass is the way you customize..
Windows cmd encoding change causes Python crash http://stackoverflow.com/questions/878972/windows-cmd-encoding-change-causes-python-crash cmd encoding change causes Python crash First I chage Windows CMD encoding to utf 8 and.. questions 878972 windows cmd encoding change causes python crash 1432462#1432462 . try # http msdn.microsoft.com.. self # don't really close the handle that would only cause problems self.closed True def fileno self return self._fileno..
What does python file extensions, .pyc .pyd .pyo stand for? http://stackoverflow.com/questions/8822335/what-does-python-file-extensions-pyc-pyd-pyo-stand-for Passing two O flags to the Python interpreter OO will cause the bytecode compiler to perform optimizations that could in..
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