python-design-patterns 0.1.1a2

A Python library for implementing design patterns

python-design-patterns

python-design-patterns is a Python library that provides implementations of various design patterns. Currently, it includes an implementation of the Pipeline pattern, which allows for the processing of data through a series of steps.

Table of Contents

• python-design-patterns
  • Table of Contents
  • Installation
  • Usage
    • Pipeline Pattern
      • Examples

Installation

To use this library, you need Python 3.9 or later installed on your machine. You can install the library using pip.

pip install python-design-patterns

Usage

Pipeline Pattern

The Pipeline pattern allows you to pass data through multiple processing steps. Each step can take inputs, perform operations, and pass results to the next step.

Examples

Here is a simple example of how to use the pipeline:

from pdp.pipeline import Pipeline, Step

# Define your processing functions
def add(x, y):
    return x + y

def compute(step1, x, z):
    return step1 + x - z

# Create a pipeline and add steps

steps = [
    Step(name="step1", func=add),
    Step(name="step2", func=compute),
]

pipeline = Pipeline(steps)

# Run the pipeline
result = pipeline.run(x=1, y=2, z=3)
print(result)  # Output: {'x': 1, 'y': 2, 'z': 3, 'step1': 3, 'step2': 1}

Here are some additional examples to demonstrate the capabilities of the Pipeline pattern:

def multiply(x, y):
    return x * y

def subtract(step1, z):
    return step1 - z

# Create a new pipeline
pipeline = Pipeline()
pipeline.add_step(Step(name="step1", func=multiply))
pipeline.add_step(Step(name="step2", func=subtract))

# Run the pipeline
result = pipeline.run(x=2, y=3, z=1)
print(result)  # Output: {'x': 2, 'y': 3, 'z': 1, 'step1': 6, 'step2': 5}