pyintro

pyintro . . . . . . Python for Scienti�c Computhing freealbert Blog: http://dspandlinux.com Email: jim2429212@gmail.com May 1, 2012 . . . . . . New Tasks . . . . . . New Tool . . . . . . What is Python? a remarkably powerful dynamic programming langu...

. . . . . . Python for Scienti�c Computhing freealbert Blog: http://dspandlinux.com Email: jim2429212@gmail.com May 1, 2012 . . . . . . New Tasks . . . . . . New Tool . . . . . . What is Python? a remarkably powerful dynamic programming language. Guido van Rossum Benevolent Dictator For Life . . . . . . Python's feature � free and opensource � runs everywhere . . . . . . Python's feature � plays well with others . . . . . . Python's feature � very clear,readable syntax Implementing the basic QuickSort algorithm in Python � Mandatory indentation � boosts developer productivity Python code is typically 13 to 1 5 the size of equivalent C++ or Java code. . . . . . . . . . . . . How to replace Matlab? Python:An Ecosystem for Scienti�c Computing . . . . . . NumPy N-dimensional Array manipulations � N-dimensional array object � linear algebra functions � Fourier transforms � random number capabilities . . . . . . SciPy Scienti�c tools for Python a library of scienti�c tools depends on the NumPy SciPy provides moudles for � statistics � optimization � numerical integration � linear algebra � Fourier transforms � signal processing � image processing � ODE solvers � special functions � ... . . . . . . Image Processing � PIL � pyopencv . . . . . . SymPy SymPy is a Python library for symbolic mathematics. SymPy provides moudles for � Core capabilities � Polynomials � Calculus � Solving equations � Discrete math � Matrices � Geometric Algebra � Geometry � Plotting � Physics � Statistics � Printing . . . . . . matplotlib a python 2D plotting library matplotlib is Object-Oriented and its syntax looks alike matlab's. Tips:It is neccessary to get a handle on its inheritance relationship. . . . . . . Mayavi Project 3D Scienti�c Data Visualization and Plotting The Mayavi project includes two related packages for 3-dimensional visualization: � Mayavi: A tool for easy and interactive visualization of data, with seamless integration with Python scienti�c libraries. � TVTK: A Traits-based wrapper for the Visualization Toolkit, a popular open-source visualization library. . . . . . . MayaVi Screenshots . . . . . . GUI Programming � PyQt � wxPython Tkinter PyGtk PyGUI PyKDE ... . . . . . . PyPy the coming future PyPy is a fast, compliant alternative implementation of Python. It has several advantages and distinct features: � Faster speed much (thanks to JIT) � Less memory usage � Highly compatible � Sandboxing � Stackless . . . . . . How fast is PyPY? It depends greatly on the type of task being performed. The geometric average of all benchmarks is 0.19 or 5.4 times faster than CPython . . . . . . PyPy is evolving . . . . . . Summary an e�cient frame for scienti�c computing

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