Python library that chains functions with dots

A python library that lets you chain together functions with dots into pipelines. Looks like jquery to me, is actually taken from Scala:

from functional import seq

seq([[1, 1], [2, 3], [5, -1]]).flat_map(lambda x: x).sum()

To use ScalaFunctional, you need only include: from functional import seq. seq is a function which takes as argument a list and returns a wrapper on that list that provides the extensions for functional programming using Scala style.

I wonder how it handles errors in the chain...

List of supported functions

 

List to List

• init: get everything except last element
• tail: get everything except first element
• inits: get subsequent inits
• tails: get subsequent tails
• drop: drop first n elements
• drop_while: drop first elements using f
• take: take first n elements
• take_while: take first elements using f
• map: map f onto sequence
• filter: filter sequence by f
• filter_not: filter sequence by not f
• reverse: reverse sequence
• distinct: return set of unique/distinct elements
• flatten
• flat_map
• group_by
• enumerate, zip_with_index
• partition
• slice
• zip
• sorted

List of (Key, Value) to List

• reduce_by_key
• group_by_key

List to Value

• head, first: get first element
• head_option: get first element or None
• last: get last element
• last_option: get last element or None
• reduce: reduce sequence using f
• fold_left
• fold_right
• count, len, size: get count of sequence
• any
• all, for_all
• max, max_by
• min, min_by
• find
• empty
• non_empty
• string: similar to mkString
• sum

Conversion to other types

• set
• list
• to_dict