Python - Map sequences in parallel

  1. HOME
  2. Python
  3. Function
  4. Mapping Functions over Iterables: map

Introduction

Given multiple sequence arguments, map function sends items taken from sequences in parallel as distinct arguments to the function:

Demo

d=pow(3, 4)                             # 3**4 
print( d )

d=list(map(pow, [1, 2, 3], [2, 3, 4]))  # 1**2, 2**3, 3**4 
print( d )

Result

With multiple sequences, map expects an N-argument function for N sequences.

Here, the pow function takes two arguments on each call-one from each sequence passed to map.

Related Topic