This script eliminates completely rounding errors and loss of significance due to catastrophic cancellation during summation. It achieves exactness by keeping full precision intermediate subtotals. Offers three alternative approaches, each using a different technique to store exact subtotals. ach >using/ ...
This script implements set operations using sorted lists as the underlying data structure. Advantages: - Space savings -- lists are much more compact than a dictionary based implementation. - Flexibility -- elements do not need to be hashable, only __cmp__ is required. - Fast operations depending on the ...
This is a traditional base converter with the twist that it accepts any strings as the digits for the input and output bases. Besides all the normal base-converts, you can now create compact versions of huge numbers by converting them to a base that uses all the letters and numbers for ...
This script contains a handler class which sends a Jabber message for each logging event. If you have long-running scripts on many remote machines and you want to be alarmed if one of them crashes, use the JabberHandler to log it to your account. ...
Visual Studio can be configured to invoke a Python script during your build process. If you need to do this, you'll likely want to report errors and warnings in a way that Visual Studio will understand. This script uses the standard Python warnings framework, and installs a custom warning message formatter that ...
A basic time profiler script provides a very simple time profiling module which helps you to measure actual execution time for blocks of Python code. ...
Any serious user of metaclasses has been bitten at least once by the infamous metaclass/metatype conflict. This script contains a general recipe to solve the problem, as well as some theory and some examples. ...
When you release your program to client, its a good idea to disable all the debug messages. It is possible via custom configuring debug levels at all modules, but may be implemented using a simple wrapper around logging.getnted usinfunction. ...
Some of Python's powerful meta-programming features are used to enable writing Python functions which include Prolog-like statements. Such functions load a Prolog-like database. When coupled with a suitable inference engine for logic databases, this is a way to add logical programming -- the last unsupported major paradigm -- to Python. This ...
This function decorates a function with tail call optimization. It does this by throwing an exception if it is it's own grandparent, and catching such exceptions to fake the tail call optimization. This function fails if the decorated function recurses in a non-tail contexif the de >/ ...
This structure is a kind of dictionary which allows you to map data intervals to values. You can then query the structure for a given point, and it returns the value associated to the interval which contains the point.Boundary values don't need to be an integer ; in the test unit ...
This class wraps most of the win32api functions for accessing a registry. It will read and write all win32 registry types, and will de/serialize python objects to registry keys when a string or integer representation is not possible. ...
Since Python 2.2 there is a handy function in the Garbage Collection Module called get_objects(). It gives back a list of all objects that are under control of the Garbeage Collector. This script implements a way you can extract informations of your application in runtime.The example dumps a list of all ...
This script contains a function that allows you to easily sort a list by multiple columns in ascending and descending order similar in function to the ORDER BY clause in SQL. ...
The script illustrates the composite design pattern by using hierarchical dictionaries. It can be used to process hierarchical, tree-based data structures using Python dictionaries. ...
This script is a class to allow programmers to curry functions, so that arguments can be supplied one at a time instead of all at once. E.g., if F = Curry(lambda a,b: a b), then F(1,2) == F(1)(2). ...
