契约测试框架pact-python 安装不了或者安装报错解决

pact-python 在github上的readme推荐使用pip install pact-python 命令来安装。

但是！但是！但是！

pact在安装过程中，会下载ruby环境，由于国内无法下载，会导致下载不到。

因此，找了很多资料，发现可以按如下步骤解决

1.首先去github下载pact-python源码，并解压出来

2.进入解压的目录，运行python setup.py build  和 python setup.py install ，运行第二个命令会发现安装卡住，此时可以中断安装

3.去github下载ruby环境pact-1.88.14-win32.zip，命名改为win32.zip ，https://github.com/pact-foundation/pact-ruby-standalone/releases

4.把改名后的zip放到python site-pactage-pact下的bin目录，并且修改 setup.py 把下载和创建目录注释掉

"""pact-python PyPI Package."""

import os
import platform
import sys
import tarfile

from zipfile import ZipFile

from setuptools import setup
from setuptools.command.develop import develop
from setuptools.command.install import install


IS_64 = sys.maxsize > 2 ** 32
PACT_STANDALONE_VERSION = '1.54.4'


here = os.path.abspath(os.path.dirname(__file__))

about = {}
with open(os.path.join(here, "pact", "__version__.py")) as f:
    exec(f.read(), about)


class PactPythonDevelopCommand(develop):
    """
    Custom develop mode installer for pact-python.

    When the package is installed using `python setup.py develop` or
    `pip install -e` it will download and unpack the appropriate Pact
    mock service and provider verifier.
    """
    def run(self):
        develop.run(self)
        bin_path = os.path.join(os.path.dirname(__file__), 'pact', 'bin')
        if not os.path.exists(bin_path):
            os.mkdir(bin_path)

        install_ruby_app(bin_path)


class PactPythonInstallCommand(install):
    """
    Custom installer for pact-python.

    Installs the Python package and unpacks the platform appropriate version
    of the Ruby mock service and provider verifier.
    """
    def run(self):
        install.run(self)
        bin_path = os.path.join(self.install_lib, 'pact', 'bin')
        # os.mkdir(bin_path) 注释掉
        install_ruby_app(bin_path)


def install_ruby_app(bin_path):
    """
    Download a Ruby application and install it for use.

    :param bin_path: The path where binaries should be installed.
    """
    target_platform = platform.platform().lower()
    uri = ('https://github.com/pact-foundation/pact-ruby-standalone/releases'
           '/download/v{version}/pact-{version}-{suffix}')

    if 'darwin' in target_platform:
        suffix = 'osx.tar.gz'
    elif 'linux' in target_platform and IS_64:
        suffix = 'linux-x86_64.tar.gz'
    elif 'linux' in target_platform:
        suffix = 'linux-x86.tar.gz'
    elif 'windows' in target_platform:
        suffix = 'win32.zip'
    else:
        msg = ('Unfortunately, {} is not a supported platform. Only Linux,'
               ' Windows, and OSX are currently supported.').format(
            platform.platform())
        raise Exception(msg)

    if sys.version_info.major == 2:
        from urllib import urlopen
    else:
        from urllib.request import urlopen

    path = os.path.join(bin_path, suffix)
　　 # 注释掉
    # resp = urlopen(uri.format(version=PACT_STANDALONE_VERSION, suffix=suffix))
    # with open(path, 'wb') as f:
    #     if resp.code == 200:
    #         f.write(resp.read())
    #     else:
    #         raise RuntimeError(
    #             'Received HTTP {} when downloading {}'.format(
    #                 resp.code, resp.url))

    if 'windows' in platform.platform().lower():
        with ZipFile(path) as f:
            f.extractall(bin_path)
    else:
        with tarfile.open(path) as f:
            f.extractall(bin_path)

5.再次执行 python setup.py install 则安装完成