asynchronizer-一個使函數異步的簡單模塊-arsh23

發佈:2020-12-22 18:04:35.716512

做者:arsh23

### 做者郵箱:programmer.arsh@gmail.com

### 首頁:https://github.com/Arsh23/asynchronizer

### 文檔:None

### 下載連接 https://github.com/Arsh23/asynchronizer/tarball/0.2.4

#############

Asynchronizerpython

#

.. _description:git

Asynchronizer is simple module that can be used to run multiple functions asynchronously. To convert a function, you just need to add a decorator :code:@asynchronize to the function. This project is still in development, so report any bugs here <https://github.com/Arsh23/asynchronizer/issues>. For examples, see the examples folder <https://github.com/Arsh23/asynchronizer/tree/master/examples>github

.. contents::bash

.. _requirements:異步

Requirementsasync

python 2.x or python 3.x

.. _installation:ide

Installation函數

Asynchronizer can be installed using pip:ui

.. code-block:: bashthis

pip install asynchronizer

How to use

Basic use ^^^^^^^^^

Suppose you have a function like this:

.. code-block:: python

import requests

def send_requests():
    r = requests.get('http://httpbin.org/get')
    print r.status_code

for _ in range(20):
    send_requests()

You can modify it like this to make it asynchronous:

.. code-block:: python

import requests
    from asynchronizer import asynchronize, Wait

    @asynchronize
    def send_requests():
        r = requests.get('http://httpbin.org/get')
        print r.status_code

    for _ in range(20):
        send_requests()

    Wait()

Example Script: ^^^^^^^^^^^^^^^

This example script will take 55 seconds to run normally, but only 10 seconds when run asynchronously

.. code-block:: python

import time
    from asynchronizer import asynchronize, Wait, setWorkers

    @asynchronize
    def func(i):
        time.sleep(i)
        print i

    for i in range(1,11):
        func(i)

    Wait()

Things to keep in mind ^^^^^^^^^^^^^^^^^^^^^^

The function :code:Wait() is necessary. If :code:Wait() is not present, your script will end without waiting for any unfinished functions to finish.
The function :code:Wait() is also a blocking function, meaning that the execution of your script will pause here till all the async functions called before this are finished. This is why it should usually be added at the end of your script

The decorated functions are async to each other, but the code inside the functions is synchronous, which means this is wrong:

.. code-block:: python

# wrong way
@asynchronize
def send_requests():
    for _ in range(20):
        r = requests.get('http://httpbin.org/get')

send_requests()

and this is the correct way:

.. code-block:: python

# correct way
@asynchronize
def send_requests():
    r = requests.get('http://httpbin.org/get')

for _ in range(20):
    send_requests()

Instead of returning values from your functions, send them to a callback. For example:

.. code-block:: python

@asynchronize
    def send_requests():
        r = requests.get('http://httpbin.org/get')
        parse(r.text)
        # instead of return r.text

Advanced use ^^^^^^^^^^^^

If you want to use a custom number of workers, just add :code:setWorkers(n) at the start of your script, with :code:n being the number of concurrent greenlet threads you want. Default is 32.
To assign priority to a specific function call, add :code:priority=n to the parameters of the function call, with :code:n being the priority you want to set. For Example: :code:func(param1,param2,param3,priority=2)

Contributing

If you want to contribute to this project, feel free to send a Pull Request to Github <https://github.com/Arsh23/asynchronizer>_

To report any bugs or request new features, head over to the Issues <https://github.com/Arsh23/asynchronizer/issues>_ page

License

Licensed under The MIT License (MIT) <https://github.com/Arsh23/asynchronizer/blob/master/LICENSE.txt>_.

Copy from pypi.org

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asynchronizer-一個使函數異步的簡單模塊-arsh23