python官方网站是-Welcome to Python.org

...pip should not

require the user to install pip.

The pip bootstrap

The Python installation includes an executable called "pip3" (see PEP 394 for

naming rationale etc.) that attempts to import pip machinery. If it can then

the pip command proceeds as normal. If it cannot it will bootstrap pip by

downloading the pip implementation and setuptools wheel files. Hereafter the

installation of the "pip implementation" will imply installation of setuptools

and virtualenv. Once installed, the pip comma...

...download and install newer versions

alongside the system ones. The easiest way to do that is to

install one of the binary installers for OS X from the

Python Download page. Installers are

available for the latest Python 3 and Python 2 releases that

will work on all Macs that run Mac OS X 10.5 and later.

Python releases include IDLE, Python's built-in interactive

development environment. If you download and install Python

from the release page, you may also need to download and install

a newer...

...pip#8387 [1] describes an

example. The command pip download --no-deps --no-binary=numpy numpy is

expected to only download an sdist for numpy, since we do not need to check

for dependencies, and both the name and version are available by introspecting

the downloaded file name. pip, however, cannot assume the downloaded archive

follows the convention, and must build and check the metadata. For a PEP 518

project, this means running the prepare_metadata_for_build_wheel hook

specified in PEP 517, wh...

...pip commands and their effect on direct_url.json

Commands that generate a direct_url.json:

pip install https://example.com/app-1.0.tgz

pip install https://example.com/app-1.0.whl

pip install "git+https://example.com/repo/app.git#egg=app&subdirectory=setup"

pip install ./app

pip install file:///home/user/app

pip install --editable "git+https://example.com/repo/app.git#egg=app&subdirectory=setup"

(in which case, url will be the local directory where the git repository has been

cloned to, ...

...downloads that where done

via it. This is used by PyPI to sum up all downloads, to be able to

display the grand total.

These statistics are in CSV-like form, with a header in the first

line. It needs to obey PEP 305 [1]. Basically, it should be

readable by Python's csv module.

The fields in this file are:

package: the distutils id of the package.

filename: the filename that has been downloaded.

useragent: the User-Agent of the client that has downloaded the

package.

count: the number of down...

...pip that will be bootstrapped using

python -m ensurepip --version or ensurepip.version().

Installation of pip into a global or virtual python environment using

python -m ensurepip or ensurepip.bootstrap().

pip install --upgrade pip in a global installation should not affect

any already created virtual environments (but is permitted to affect

future virtual environments, even though it will not do so when using

the standard implementation of ensurepip).

pip install --upgrade pip in a virtual envi...

...pip and setuptools

for quite some time support for PEP 438 has only existed in pip since the 1.4

version, and still has yet to be implemented in setuptools. The design of

PEP 438 did mean that users still benefited for projects which did not require

external files even with older installers, however for projects which did

require external files, users are still silently being given either potentially

unreliable or, even worse, unsafe files to download. This system is also unique

to Python as it ...

...pip package manager

PEP 454, a new "tracemalloc" module for tracing Python memory allocations

PEP 456, a new hash algorithm for Python strings and binary data

PEP 3154, a new and improved protocol for pickled objects

PEP 3156, a new "asyncio" module, a new framework for asynchronous I/O

More resources

Online Documentation

3.4 Release Schedule

Report bugs at http://bugs.python.org.

Help fund Python and its community.

Download

Please proceed to the download page for the...

...pip would use TUF to verify distributions downloaded only from PyPI.

pip MAY support TAP 4 [31] in order use TUF to also verify distributions downloaded

from elsewhere [32].

What Additional Repository Files are Required on PyPI?

In order for package managers like pip to download and verify distributions with

TUF, a few extra files MUST be added to PyPI. These extra repository files are

called TUF metadata, and they contain such information as which keys can be trusted,

the cryptographic...

...pip would use TUF to verify distributions downloaded only from PyPI.

pip MAY support TAP 4 [31] in order use TUF to also verify distributions downloaded

from elsewhere [32].

What Additional Repository Files are Required on PyPI?

In order for package managers like pip to download and verify distributions with

TUF, a few extra files MUST be added to PyPI. These extra repository files are

called TUF metadata, and they contain such information as which keys can be trusted,

the cryptographic hashes ...

...Download

Please proceed to the download page for the download.

Notes on this release:

The OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.

The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".) They will not work on Intel Itanium Processors (formerly "IA-64&q...

Version: Python 3.x.x

Released: March 17, 2014

Python 3.4.0

Python 3.4 has reached end-of-life. Python 3.4.10, the final release of the 3.4 series, is available here.

Python 3.4.0 was released on March 16th, 2014.

Major new features of the 3.4 series, compared to 3.3

Python 3.4 ...

...Download

This is a preview release, and its use is not recommended in production

settings.

Please proceed to the download page for the download.

Notes on this release:

The final release is scheduled for a week after this release, and it is anticipated that there will be few (if any) changes to Python 3.4.0 between this release and the final release.

The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and...

...Download

Please proceed to the download page for the download.

Notes on this release:

The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".) They will not work on Intel Itanium Processors (formerly "IA-64").

There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.

...Download

Please proceed to the download page for the download.

Notes on this release:

The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".) They will not work on Intel Itanium Processors (formerly "IA-64").

There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.

...Download

Please proceed to the download page to download Python 3.4.5.

As of Python 3.4.5, the Python 3.4 series only receives Notes on this previous release:

The OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.

The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64"....

Version: Python 3.x.x

Released: March 10, 2014

Python 3.4.0rc3

Python 3.4 has reached end-of-life. Python 3.4.10, the final release of the 3.4 series, is available here.

Python 3.4.0 release candidate 3 was released on March 9th, 2014.

This is a preview release of the next major release of Python ...

Version: Python 3.x.x

Released: May 5, 2014

Python 3.4.1rc1

Python 3.4 has reached end-of-life. Python 3.4.10, the final release of the 3.4 series, is available here.

Python 3.4.1 was released on May 18th, 2014.

Python 3.4.1 has over three hundred bugfixes and other improvements over 3.4 ...

Version: Python 2.x.x

Released: Nov. 26, 2014

Python 2.7.9rc1 is the first release candidate for the next bugfix version of

the Python 2.7 series. Python 2.7.9 will include several significant changes

unprecedented in a "bugfix" release:

The entirety of Python 3.4's ssl module has been backported for Python

2.7 ...

Version: Python 3.x.x

Released: Sept. 22, 2014

Python 3.4.2rc1

Python 3.4 has reached end-of-life. Python 3.4.10, the final release of the 3.4 series, is available here.

Python 3.4.2rc1 was released on September 22nd, 2014.

Python 3.4.2 has many bugfixes and other small improvements over 3.4.1 ...