Functional Python Programming

Additional Tuple Techniques The preceding code would be changed to the following code snippet: def float_lat_lon(row_iter): retu ...

Chapter 7 Building namedtuples with functional constructors There are three ways we can build namedtuple instances. The choice o ...

Additional Tuple Techniques A common statistical measure of correlation between two sets of data is the Spearman rank correlatio ...

Chapter 7 The second step will wrap these two-tuples into yet another layer of wrapping. We'll sort by the x value in the origin ...

Additional Tuple Techniques Assigning statistical ranks We'll break the rank ordering problem into two parts. First, we'll look ...

Chapter 7 Similarly, we could have written two properly recursive functions to emit the collection with the assigned rank values ...

Additional Tuple Techniques The following is how we can create an object that wraps a pair with the rank order based on the y va ...

Chapter 7 We're going to create a flat namedtuple with multiple peer attributes. This kind of expansion is often easier to work ...

Additional Tuple Techniques Computing the Spearman rank-order correlation The Spearman rank-order correlation is a comparison be ...

Chapter 7 In Chapter 4, Working with Collections, we showed how to compute the Pearson correlation coefficient. The function we ...

Additional Tuple Techniques In rare cases, we might need to have different behavior based on the types of the data elements. We ...

Chapter 7 yield from rank_data(tuple(seq_or_iter), key) data = seq_or_iter head= seq_or_iter[0] Convert to Rank_Data and process ...

Additional Tuple Techniques This function relies on two other functions. They can be declared within the body of rerank(). We'll ...

Chapter 7 This depends on the yield_sequence() function, which looks as follows: def yield_sequence(rank, same_rank_iter): head= ...

Additional Tuple Techniques Here, we defined a collection of pairs. Then, we ranked the two tuples, assigning the sequence of Ra ...

The Itertools Module Functional programming emphasizes stateless programming. In Python this leads us to work with generator exp ...

The Itertools Module We need to emphasize an important limitation of iterables that we've touched upon in other places. Iterable ...

Chapter 8 This function can be thought of as the primitive basis for a function like enumerate(). We can define the enumerate() ...

The Itertools Module We'll get the next value from the iterator. If it passes the test, that's our value. Otherwise, we'll evalu ...

Chapter 8 If we zip together a finite collection of numbers, we'll get a set of triples with a number, and two flags showing whe ...