sandbox

Functions –

• parallel.fold(binop, seq[, default, map, …] – Reduce without guarantee of ordered reduction.

  
  

  
  
  

  import toolz    def sum(a, b):     return a + b    print(toolz.sandbox.parallel.fold(sum, [1, 2, 3, 4]))

  Output –

  10

• core.unzip(seq) – Inverse of zip.

  
  

  
  
  

  import toolz    l1, l2 = toolz.sandbox.core.unzip([(0, 1),                                    (1, 2),                                    (2, 3)])    print(list(l1), list(l2))

  Output –

  [0, 1, 2] [1, 2, 3]
  

  
  
  
  

Toolz package provides a set of utility functions for iterators, functions, and dictionaries. These functions extend the standard libraries itertools and functools and borrow heavily from the standard libraries of contemporary functional languages. This package consists of following modules –

• dicttoolz
• functoolz
• itertoolz
• recipes
• sandbox