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ASN.1 types and codecs (BER, CER, DER) implementation in Python programming language.

Python Call Graph uses GraphViz to generate call graphs from one execution of your Python code. It's very easy to use and can point out possible problems with your code execution.

Pygit2 is a set of Python bindings to the libgit2 shared library, libgit2 implements the core of Git. Pygit2 works with Python 2.7, 3.2, 3.3, 3.4 and pypy.

Pyke introduces a form of Logic Programming (inspired by Prolog) to the Python community by providing a knowledge-based inference engine (expert system) written in 100% Python.

Pyparsing is a general parsing module for Python. Grammars are implemented directly in the client code using parsing objects, instead of externally, as with lex/yacc-type tools. Includes simple examples for parsing SQL, CORBA IDL, and 4-function math.

The pytest testing tool makes it easy to write small tests, yet scales to support complex functional testing. Features: * Auto-discovery of test modules and functions * Detailed info on failing assert statements * Modular fixtures for managing small or parametrized long-lived test resources * Multi-paradigm support: you can use pytest to run test suites based on unittest (or trial), nose * Single-source compatibility from Python2.6 all the way up to Python3.4, PyPy-2.3, (jython-2.5 untested) * Many external plugins

KCachegrind is a visualization tool for the profiling data generated by Cachegrind (which is part of valgrind) and Calltree.

KDbg is a graphical user interface to gdb, the GNU debugger, to provide an intuitive interface for setting breakpoints, inspecting variables, and stepping through code. * Inspection of variable values in a tree structure. * Debugger at your finger tips: The basic debugger functions (step, next, run, finish, until, set/clear/enable/disable breakpoint) are bound to function keys F5 through F10. * Of course, lots of other basic functions: View source code, search text, set program arguments and environment variables, display arbitrary expressions * Debugging of core dumps, attaching to running processes is possible. * Conditional breakpoints.

pytz brings the Olson tz database into Python. This library allows accurate and cross platform timezone calculations. It also solves the issue of ambiguous times at the end of daylight savings, which you can read more about in the Python Library Reference (datetime.tzinfo).

PyChecker is a python source code checking tool to help you find common bugs. It is meant to find problems that are typically caught by a compiler. Because of the dynamic nature of python, some warnings may be incorrect; however, spurious warnings should be fairly infrequent. PyChecker works in a combination of ways. First, it imports each module. If there is an import error, the module cannot be processed. The import provides some basic information about the module. For each function, class, and method, the code within the function is checked for possible problems. Types of problems that can be found include: * No doc strings in modules, classes, functions, and methods * self not the first parameter to a method * Wrong number of parameters passed to functions/methods * No global found (e.g., using a module without importing it) * Global not used (module or variable)