Steven F.Lott,has been programming since the '70s, when computers were large,expensive, and rare. He's been using Python to solve business problems for over 10 years.His other titles with Packt Publishing include Python Essentials, Mastering Object-OrientedPython, Functional Python Programming, and Python for Secret Agents. Steven is currently atechnomad who lives in city along the east coast of the U.S. You can follow his technologyblog (slott-softwarearchitect).
【目录】
Copyright and Credits Preface
Chapter 1: Understanding Functional Programming Identifying a paradigm Subdividing the procedural paradigm Using the functional paradigm Using a functional hybrid Looking at object creation The stack of turtles A classic example of functional programming Exploratory data analysis Summary
Chapter 2: Introducing Essential Functional Concepts First-class functions Pure functions Higher-order functions Immutable data Strict and non-strict evaluation Recursion instead of an explicit loop state Functional type systems Familiar territory Learning some advanced concepts Summary
Chapter 3: Functions, Iterators, and Generators Writing pure functions Functions as first-class objects Using strings Using tuples and named tuples Using generator expressions Exploring the limitations of generators Combining generator expressions Cleaning raw data with generator functions Using lists, dicts, and sets Using stateful mappings Using the bisect module to create a mapping Using stateful sets Summary
Chapter 4: Working with Collections An overview of function varieties Working with iterables Parsing an XML file Parsing a file at a higher level Pairing up items from a sequence Using the iterO function explicitly Extending a simple loop Applying generator expressions to scalar functions Using any() and all() as reductions Using lenO and sum() Using sums and counts for statistics Using zip() to structure and flatten sequences Unzipping a zipped sequence Flattening sequences Structuring flat sequences Structuring flat sequences - an alternative approach Using reversed() to change the order Using enumerate() to include a sequence number Summary
Chapter 5: Higher-Order Functions Using max() and min0 to find extrema Using Python lambda forms Lambdas and the lambda calculus Using the map() function to apply a function to a collection Working with lambda forms and map() Using map() with multiple sequences Using the filter() function to pass or reject data Using filter() to identify outliers The iter0 function with a sentinel value Using sorted() to put data in order Writing higher-order functions Writing higher-order mappings and filters Unwrapping data while mapping Wrapping additional data while mapping Flattening data while mapping Structuring data while filtering Writing generator functions Building higher-order functions with callables Assuring good functional design Review of some design patterns Summary
Chapter 6: Recursions and Reductions Simple numerical recursions Implementing tail-call optimization Leaving recursion in place Handling difficult tail-call optimization Processing collections through recursion Tail-call optimization for collections Reductions and folding a collection from many items to one Group-by reduction from many items to fewer Building a mapping with Counter Building a mapping by sorting Grouping or partitioning data by key values Writing more general group-by reductions Writing higher-order reductions Writing file parsers Parsing CSV files Parsing plain text files with headers Summary
Chapter 7: Additional Tuple Techniques Using tuples to collect data Using named tuples to collect data Building named tuples with functional constructors Avoiding stateful classes by using families of tuples Assigning statistical ranks Wrapping instead of state changing Rewrapping instead of state changing Computing Spearman rank-order correlation Polymorphism and type-pattern matching Summary
Chapter 8: The Itertools Module Working with the infinite iterators Counting with count() Counting with float arguments Re-iterating a cycle with cycle() Repeating a single value with repeat() Using the finite iterators Assigning numbers with enumerate() Running totals with accumulate() Combining iterators with chain() Partitioning an iterator with groupby0 Merging iterables with zip_longest0 and zip() Filtering with compress() Picking subsets with islice() Stateful filtering with dropwhile0 and takewhile0 Two approaches to filtering with filterfalse() and filter() Applying a function to data via starmap0 and map() Cloning iterators with tee() The itertools recipes Summary
Chapter 9: More Itertools Techniques Enumerating the Cartesian product Reducing a product Computing distances Getting all pixels and all colors Performance analysis Rearranging the problem Combining two transformations Permuting a collection of values Generating all combinations Recipes Summary
Chapter 10: The Functools Module Function tools Memoizing previous results with Iru_cache Defining classes with total ordering Defining number classes Applying partial arguments with partial() Reducing sets of data with the reduce() function Combining map() and reduce() Using the reduce() and partial() functions Using the map() and reduce() functions to sanitize raw data Using the groupby0 and reduce() functions Summary
Chapter 11: Decorator Design Techniques Decorators as higher-order functions Using the functools update_wrapper0 functions Cross-cutting concerns Composite design Preprocessing bad data Adding a parameter to a decorator Implementing more complex decorators CompLex design considerations Summary
Chapter 12: The Multiprocessing and Threading Modules Functional programming and concurrency What concurrency really means The boundary conditions Sharing resources with process or threads Where benefits will accrue Using multiprocessing pools and tasks Processing many large files Parsing log files - gathering the rows Parsing log lines into namedtuples Parsing additional fields of an Access object Filtering the access details Analyzing the access details The complete analysis process Using a multiprocessing pool for concurrent processing Using apply() to make a single request Using the map_async0, starmap_async(), and apply_async0 functions More complex multiprocessing architectures Using the concurrent.futures module Using concurrent.futures thread pools Using the threading and queue modules Designing concurrent processing Summary
Chapter 13: Conditional Expressions and the Operator Module Evaluating conditional expressions Exploiting non-strict dictionary rules Filtering true conditional expressions Finding a matching pattern Using the operator module instead of lambdas Getting named attributes when using higher-order functions Starmapping with operators Reducing with operator module functions Summary
Chapter 14: The PyMonad Library Downloading and installing Functional composition and currying Using curried higher-order functions Currying the hard way Functional composition and the PyMonad * operator Functors and applicative functors Using the lazy List() functor Monad bind() function and the >> operator Implementing simulation with monads Additional PyMonad features Summary
Chapter 15: A Functional Approach to Web Services The HTTP request-response model Injecting state through cookies Considering a server with a functional design Looking more deeply into the functional view Nesting the services The WSGI standard Throwing exceptions during WSGI processing Pragmatic WSGI applications Defining web services as functions Creating the WSGI application Getting raw data Applying a filter Serializing the results Serializing data into JSON or CSV formats Serializing data into XML Serializing data into HTML Tracking usage Summary
Chapter 16: Optimizations and Improvements Memoization and caching Specializing memoization Tail recursion optimizations Optimizing storage Optimizing accuracy Reducing accuracy based on audience requirements Case study-making a chi-squared decision Filtering and reducing the raw data with a Counter object Reading summarized data Computing sums with a Counter object Computing probabilities from Counter objects Computing expected values and displaying a contingency table Computing the chi-squared value Computing the chi-squared threshold Computing the incomplete gamma function Computing the complete gamma function Computing the odds of a distribution being random Functional programming design patterns Summary
以下为对购买帮助不大的评价