Python记录-Pip安装
1.第一步
下载py文件:https://bootstrap.pypa.io/ez_setup.py

#!/usr/bin/env python """
Setuptools bootstrapping installer. Maintained at https://github.com/pypa/setuptools/tree/bootstrap. Run this script to install or upgrade setuptools.
""" import os
import shutil
import sys
import tempfile
import zipfile
import optparse
import subprocess
import platform
import textwrap
import contextlib
import json
import codecs from distutils import log try:
from urllib.request import urlopen
from urllib.parse import urljoin
except ImportError:
from urllib2 import urlopen
from urlparse import urljoin try:
from site import USER_SITE
except ImportError:
USER_SITE = None LATEST = object()
DEFAULT_VERSION = LATEST
DEFAULT_URL = "https://pypi.io/packages/source/s/setuptools/"
DEFAULT_SAVE_DIR = os.curdir def _python_cmd(*args):
"""
Execute a command. Return True if the command succeeded.
"""
args = (sys.executable,) + args
return subprocess.call(args) == 0 def _install(archive_filename, install_args=()):
"""Install Setuptools."""
with archive_context(archive_filename):
# installing
log.warn('Installing Setuptools')
if not _python_cmd('setup.py', 'install', *install_args):
log.warn('Something went wrong during the installation.')
log.warn('See the error message above.')
# exitcode will be 2
return 2 def _build_egg(egg, archive_filename, to_dir):
"""Build Setuptools egg."""
with archive_context(archive_filename):
# building an egg
log.warn('Building a Setuptools egg in %s', to_dir)
_python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
# returning the result
log.warn(egg)
if not os.path.exists(egg):
raise IOError('Could not build the egg.') class ContextualZipFile(zipfile.ZipFile): """Supplement ZipFile class to support context manager for Python 2.6.""" def __enter__(self):
return self def __exit__(self, type, value, traceback):
self.close() def __new__(cls, *args, **kwargs):
"""Construct a ZipFile or ContextualZipFile as appropriate."""
if hasattr(zipfile.ZipFile, '__exit__'):
return zipfile.ZipFile(*args, **kwargs)
return super(ContextualZipFile, cls).__new__(cls) @contextlib.contextmanager
def archive_context(filename):
"""
Unzip filename to a temporary directory, set to the cwd. The unzipped target is cleaned up after.
"""
tmpdir = tempfile.mkdtemp()
log.warn('Extracting in %s', tmpdir)
old_wd = os.getcwd()
try:
os.chdir(tmpdir)
with ContextualZipFile(filename) as archive:
archive.extractall() # going in the directory
subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
os.chdir(subdir)
log.warn('Now working in %s', subdir)
yield finally:
os.chdir(old_wd)
shutil.rmtree(tmpdir) def _do_download(version, download_base, to_dir, download_delay):
"""Download Setuptools."""
py_desig = 'py{sys.version_info[0]}.{sys.version_info[1]}'.format(sys=sys)
tp = 'setuptools-{version}-{py_desig}.egg'
egg = os.path.join(to_dir, tp.format(**locals()))
if not os.path.exists(egg):
archive = download_setuptools(version, download_base,
to_dir, download_delay)
_build_egg(egg, archive, to_dir)
sys.path.insert(0, egg) # Remove previously-imported pkg_resources if present (see
# https://bitbucket.org/pypa/setuptools/pull-request/7/ for details).
if 'pkg_resources' in sys.modules:
_unload_pkg_resources() import setuptools
setuptools.bootstrap_install_from = egg def use_setuptools(
version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=DEFAULT_SAVE_DIR, download_delay=15):
"""
Ensure that a setuptools version is installed. Return None. Raise SystemExit if the requested version
or later cannot be installed.
"""
version = _resolve_version(version)
to_dir = os.path.abspath(to_dir) # prior to importing, capture the module state for
# representative modules.
rep_modules = 'pkg_resources', 'setuptools'
imported = set(sys.modules).intersection(rep_modules) try:
import pkg_resources
pkg_resources.require("setuptools>=" + version)
# a suitable version is already installed
return
except ImportError:
# pkg_resources not available; setuptools is not installed; download
pass
except pkg_resources.DistributionNotFound:
# no version of setuptools was found; allow download
pass
except pkg_resources.VersionConflict as VC_err:
if imported:
_conflict_bail(VC_err, version) # otherwise, unload pkg_resources to allow the downloaded version to
# take precedence.
del pkg_resources
_unload_pkg_resources() return _do_download(version, download_base, to_dir, download_delay) def _conflict_bail(VC_err, version):
"""
Setuptools was imported prior to invocation, so it is
unsafe to unload it. Bail out.
"""
conflict_tmpl = textwrap.dedent("""
The required version of setuptools (>={version}) is not available,
and can't be installed while this script is running. Please
install a more recent version first, using
'easy_install -U setuptools'. (Currently using {VC_err.args[0]!r})
""")
msg = conflict_tmpl.format(**locals())
sys.stderr.write(msg)
sys.exit(2) def _unload_pkg_resources():
sys.meta_path = [
importer
for importer in sys.meta_path
if importer.__class__.__module__ != 'pkg_resources.extern'
]
del_modules = [
name for name in sys.modules
if name.startswith('pkg_resources')
]
for mod_name in del_modules:
del sys.modules[mod_name] def _clean_check(cmd, target):
"""
Run the command to download target. If the command fails, clean up before re-raising the error.
"""
try:
subprocess.check_call(cmd)
except subprocess.CalledProcessError:
if os.access(target, os.F_OK):
os.unlink(target)
raise def download_file_powershell(url, target):
"""
Download the file at url to target using Powershell. Powershell will validate trust.
Raise an exception if the command cannot complete.
"""
target = os.path.abspath(target)
ps_cmd = (
"[System.Net.WebRequest]::DefaultWebProxy.Credentials = "
"[System.Net.CredentialCache]::DefaultCredentials; "
'(new-object System.Net.WebClient).DownloadFile("%(url)s", "%(target)s")'
% locals()
)
cmd = [
'powershell',
'-Command',
ps_cmd,
]
_clean_check(cmd, target) def has_powershell():
"""Determine if Powershell is available."""
if platform.system() != 'Windows':
return False
cmd = ['powershell', '-Command', 'echo test']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_powershell.viable = has_powershell def download_file_curl(url, target):
cmd = ['curl', url, '--location', '--silent', '--output', target]
_clean_check(cmd, target) def has_curl():
cmd = ['curl', '--version']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_curl.viable = has_curl def download_file_wget(url, target):
cmd = ['wget', url, '--quiet', '--output-document', target]
_clean_check(cmd, target) def has_wget():
cmd = ['wget', '--version']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_wget.viable = has_wget def download_file_insecure(url, target):
"""Use Python to download the file, without connection authentication."""
src = urlopen(url)
try:
# Read all the data in one block.
data = src.read()
finally:
src.close() # Write all the data in one block to avoid creating a partial file.
with open(target, "wb") as dst:
dst.write(data)
download_file_insecure.viable = lambda: True def get_best_downloader():
downloaders = (
download_file_powershell,
download_file_curl,
download_file_wget,
download_file_insecure,
)
viable_downloaders = (dl for dl in downloaders if dl.viable())
return next(viable_downloaders, None) def download_setuptools(
version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=DEFAULT_SAVE_DIR, delay=15,
downloader_factory=get_best_downloader):
"""
Download setuptools from a specified location and return its filename. `version` should be a valid setuptools version number that is available
as an sdist for download under the `download_base` URL (which should end
with a '/'). `to_dir` is the directory where the egg will be downloaded.
`delay` is the number of seconds to pause before an actual download
attempt. ``downloader_factory`` should be a function taking no arguments and
returning a function for downloading a URL to a target.
"""
version = _resolve_version(version)
# making sure we use the absolute path
to_dir = os.path.abspath(to_dir)
zip_name = "setuptools-%s.zip" % version
url = download_base + zip_name
saveto = os.path.join(to_dir, zip_name)
if not os.path.exists(saveto): # Avoid repeated downloads
log.warn("Downloading %s", url)
downloader = downloader_factory()
downloader(url, saveto)
return os.path.realpath(saveto) def _resolve_version(version):
"""
Resolve LATEST version
"""
if version is not LATEST:
return version meta_url = urljoin(DEFAULT_URL, '/pypi/setuptools/json')
resp = urlopen(meta_url)
with contextlib.closing(resp):
try:
charset = resp.info().get_content_charset()
except Exception:
# Python 2 compat; assume UTF-8
charset = 'UTF-8'
reader = codecs.getreader(charset)
doc = json.load(reader(resp)) return str(doc['info']['version']) def _build_install_args(options):
"""
Build the arguments to 'python setup.py install' on the setuptools package. Returns list of command line arguments.
"""
return ['--user'] if options.user_install else [] def _parse_args():
"""Parse the command line for options."""
parser = optparse.OptionParser()
parser.add_option(
'--user', dest='user_install', action='store_true', default=False,
help='install in user site package')
parser.add_option(
'--download-base', dest='download_base', metavar="URL",
default=DEFAULT_URL,
help='alternative URL from where to download the setuptools package')
parser.add_option(
'--insecure', dest='downloader_factory', action='store_const',
const=lambda: download_file_insecure, default=get_best_downloader,
help='Use internal, non-validating downloader'
)
parser.add_option(
'--version', help="Specify which version to download",
default=DEFAULT_VERSION,
)
parser.add_option(
'--to-dir',
help="Directory to save (and re-use) package",
default=DEFAULT_SAVE_DIR,
)
options, args = parser.parse_args()
# positional arguments are ignored
return options def _download_args(options):
"""Return args for download_setuptools function from cmdline args."""
return dict(
version=options.version,
download_base=options.download_base,
downloader_factory=options.downloader_factory,
to_dir=options.to_dir,
) def main():
"""Install or upgrade setuptools and EasyInstall."""
options = _parse_args()
archive = download_setuptools(**_download_args(options))
return _install(archive, _build_install_args(options)) if __name__ == '__main__':
sys.exit(main())
2.第二步,执行上面的代码,会看到一个下载地址
https://pypi.io/packages/source/s/setuptools/setuptools-23.0.0.zip
3.下载zip,并解压
然后安装setuptools
第四步骤,安装pip
pip下载地址:https://pypi.python.org/pypi/pip#downloads
4.把pip命令,添加到path下
D:\Program Files\Python27\Scripts
Python记录-Pip安装的更多相关文章
- 【pycharm】在pycharm上,使用python的pip安装tensorflow过程
如题:在pycharm上,使用python的pip安装tensorflow过程 最后成功安装的版本信息是: python版本是3.6.5 pip版本是9.0.1 pycharm版本是2018.1 te ...
- python的pip 安装
python的pip 安装 python有很多好用的包,但是需要的时候一一安装实在是麻烦,还好有pip这么好用的安装工具.所以第一步是安装pip,然后其它软件都so easy! 文章来源:https: ...
- python使用pip安装第三方模块遇到的问题及解决方法
python使用pip安装第三方模块遇到的问题及解决方法 关注公众号"轻松学编程"了解更多. 使用国内源: 清华:https://pypi.tuna.tsinghua.edu.cn ...
- python使用pip安装模块出错 Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None))
python使用pip安装模块出错 Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) 问题: ...
- 5.python之pip安装模块失败
本文是篇水文,主要是在学习python过程中总是遇到使用pip安装一些模块失败,记录一下安装模块解决办法 第一种方法: 首先安装wheel模块: pip install wheel 如果wheel都安 ...
- 新手入门:python的pip安装(二)
pip的安装以及使用pip安装包 —–安装python的时候勾选了下载pip,不知道为什么没下载.然后就偷懒想着需要哪个包再单独去下载就好了,然后!!!每个包都会出点小问题,导致我这个初学者有三天不想 ...
- python 之 PIP 安装
1.安装的必备包 pip 和 setuptool 都要有, 这个可以从python.org网站下载 // setuptool 安装 下载地址 https://pan.baidu.com/s/1gf ...
- Python中pip安装问题解决
用国内镜像通过pip安装python的一些包,有时会出现安装失败, 为什么总是失败?自己操作老标准了,这么简单的几个小步骤还老是出错,不由得让我怀疑是否是撞墙了,可是又懒得买vpn去翻~~一墙,无法代 ...
- Python用pip安装IPython/Jupyter最佳交互环境
一.Python模块及安装包简介 如果说编程语言是武器,那么Python就是一把双管枪(Python2/Python3),而各种为Python编写的模块和包就是子弹.使用pip来填满我们的武器吧! I ...
随机推荐
- BCB6 重装后的项目编译莫名问题
我很少用 bcb ,重装 bcb6 后原来的项目居然不能编译成功了,看了一下是控件的问题,但很多控件实际上并不关联的,而 bcb 坚持要你"拥有"当时的控件环境,折腾很久实在是没发 ...
- Python: 如何继承str/string?
想搞一个对象继承自str,然后存一些额外信息用来标识这个字符串,然后理所当然地重写了__init__发现跪了: class newstring(str): def __init__(self, val ...
- ASP.NET 4.0 potentially dangerous Request.Form value was detected
A few days ago, while working on an ASP.NET 4.0 Web project, I got an issue. The issue was, when use ...
- 老鼠跑猫叫主人惊醒c++观察者模式实现
这个题目算是比较经典的观察者模式了,老鼠作为一个Subject,主动发出跑的动作,紧跟着猫由于老鼠的跑而发出叫声,主人也被惊醒,在这里猫跟主人都是被动的,是观察者角色,代码实现如下: class CS ...
- WinStore之Application Data
一.Application Data简介 Applicaion Data相当于桌面应用的注册表,存储一些用户配置信息,如运行时状态,用户喜好等,需要注意的时,当卸载应用时,这些数据会被删除,所以不要存 ...
- 跟随标准与Webkit源码探究DOM -- 获取元素之getElementsByName
按照name属性获取多元素 -- getElementsByName 标准 DOM 1 定义在HTMLDocument Interface 中,原型NodeList getElementsByName ...
- 重构第1天:封装集合(Encapsulate Collection)
理解:封装集合就是把集合进行封装,只提供调用者所需要的功能行借口,保证集合的安全性. 详解:在大多的时候,我们没有必要把所有的操作暴露给调用者,只需要把调用者需要的相关操作暴露给他,这种情况中下我们就 ...
- CG
//设置线的宽度 CGContextSetLineWidth(ctx, 12); //设置线的连接处 (拐点) CGContextSetLineJoin(ctx, kCGLineJoinRound ) ...
- 快速开发~Rafy框架的初步认识
当我们开始使用EF的同时,是不是就会更好的认识了其他的ORM框架,最近接触了Rafy的使用,感觉还是蛮有兴趣去学习的,虽然最初的我到现在看的并不深入,但是我个人感觉还是可以简单地做一些总结的啦,或许语 ...
- HTTP 错误 503.2 - Service Unavailable 正在超过 serverRuntime@appConcurrentRequestLimit 设置的值。
HTTP 错误 503.2 - Service Unavailable 正在超过 serverRuntime@appConcurrentRequestLimit 设置的值. dudu的解决办法:htt ...