pipef Quick Start Guide

Installation

pip install pipef

See Installing pipef for other package managers

Your First Lazy Pipeline

Bare pipef, never called, builds a reusable function out of everything piped into it

from pipef import pipef

def add_2(x):
    return x + 2

def mult_3(x):
    return x * 3

fn = pipef | add_2 | mult_3
fn(2)
> 12

Your First Eager Pipeline

Calling pipef(...) pipes those arguments through the chain right away, one step at a time. The result unpacks with result, =, or a plain call

from pipef import pipef

result, = pipef(2) | add_2 | mult_3
result
> 12

Forking

Every | returns a fresh pipef, so branching off one chain never changes the original — in either mode

from pipef import pipef

base = pipef | add_2
branch_a = base | mult_3
branch_b = base | (lambda x: x - 3)
branch_a(2)
> 12
branch_b(2)
> 1
base(2)
> 4

Next Steps

Usage Guide covers kwargs seeds, empty seeds, and the edge cases around reading a value before piping it. Comparison lines pipef’s syntax up against other piping libraries