Download Building Web Applications with Python and Neo4j by Sumit Gupta PDF

By Sumit Gupta

ISBN-10: 1783983981

ISBN-13: 9781783983988

Increase fascinating real-world Python-based net purposes with Neo4j utilizing frameworks comparable to Flask, Py2neo, and Django
About This Book

increase a collection of universal purposes and strategies with Neo4j and Python
safe and set up the Neo4j database in production
A step by step advisor on imposing and deploying interactive Python-based net functions on graph info model

Who This e-book Is For

If you're a Python developer and wish to extend your realizing of Python-based net purposes over Neo4j graph info types, this can be the booklet for you.
What you are going to Learn

comprehend the licensing and install of the Neo4j database and paintings with its quite a few instruments and utilities
research the intricacies of Cypher as a graph question language
paintings with Cypher to create and regulate graph facts models
combine Python and Neo4j utilizing Py2neo
enhance REST-based prone over social community info utilizing Flask and item graph types over Neo4j
combine Django-based net functions over graph facts versions utilizing Neomodel
discover various deployment types and their applicability with present applications

In Detail

Py2neo is an easy and pragmatic Python library that gives entry to the preferred graph database Neo4j through its RESTful internet carrier interface. This brings with it a seriously refactored center, a purifier API, higher functionality, and a few new idioms.

You will start with licensing and fitting Neo4j, studying the basics of Cypher as a graph question language, and exploring Cypher optimizations. you can find how one can combine with numerous Python frameworks similar to Flask and its extensions: Py2neo, Neomodel, and Django. ultimately, the deployment facets of your Python-based Neo4j purposes in a creation atmosphere is additionally coated. via sequentially operating throughout the steps in every one bankruptcy, you are going to fast examine and grasp many of the implementation information and integrations of Python and Neo4j, aiding you to strengthen your use circumstances extra fast.

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Additional resources for Building Web Applications with Python and Neo4j

Sample text

Some examples are round_, fix (to round the elements of an array to a desired number of decimal places), angle (to provide the angle of the elements of an array, provided they are complex numbers), any basic trigonometric (sin, cos, tan, sic), exponential (exp, exp2, sinh, cosh), and logarithmic functions (log, log10, log2). We also have mathematical functions that treat the array as output of multidimensional functions, and offer relevant computations. Some useful examples are diff (to emulate differentiation along any specified dimension, by performing discrete differences), gradient (to compute the gradient of the corresponding function), or cov (for the covariance of the array).

SciPy for Numerical Analysis For instance, in the following code snippet, the log1p function computes the natural logarithm of 1 + x. Why not simply add 1 to the value of x, and then take the logarithm instead? 9999999999999998e-17 While the absolute error of the first computation is small, the relative error is 100 percent. In the same way as Lena image is regarded as the performance test in image processing, we have a few functions that are used to test different algorithms in different scenarios.

The basic slice is a Python object of the form slice(start,stop,step), or in a more compact notation, start:stop:step. Initially, the three variables start, stop, and step are non-negative integer values, with start less than or equal to stop. This represents the sequence of indices start + (k * step), for indices k from 0 to the largest integer smaller or equal to the value given by (stop - start) / step. When a slice is placed on any of the dimensions of ndarray, it selects all entries in that dimension indexed by the corresponding sequence of indices.

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