怎样更新pip命令

Linux 或 macOS

pip install --upgrade pip# python2.x

pip3 install --upgrade pip # python3.x

Windows 平台升级：

python -m pip install -U pip # python2.x

python -m pip3 install -U pip# python3.x

1、先说一下什么是pip

pip 是“A tool for installing and managing Python packages.”，也就是说pip是python的软件安装工具

2、下面介绍怎么在linux下安装pip

下载pip到/usr/local/src

# cd /usr/local/src

# wget "https://pypi.python.org/packages/source/p/pip/pip-1.5.4.tar.gz#md5=834b2904f92d46aaa333267fb1c922bb" --no-check-certificate

如果提示：-bash: wget: command not found

那么安装wget，执行如下：

# yum -y install wget

解夺安装pip

# tar -xzvf pip-1.5.4.tar.gz

# cd pip-1.5.4

# python setup.py install

如果安装报下面的错：

Traceback (most recent call last):

File "setup.py", line 6, in <module>

from setuptools import setup, find_packages

ImportError: No module named setuptools

那么就要先安装setuptools包

(1)下载setuptools包

# wget http://pypi.python.org/packages/source/s/setuptools/setuptools-2.0.tar.gz

(2)解压setuptools包

# tar zxvf setuptools-2.0.tar.gz

# cd setuptools-2.0

(3)编译setuptools

# python setup.py build

(4)开始执行setuptools安装

# python setup.py install

安装完成setuptools包后，在重新执行：

# cd /usr/local/src/pip-1.5.4

# python setup.py install

至此pip安装完成

3、linux下pip使用参数

# pip --help

Usage:

pip <command>[options]

Commands:

install Install packages.

uninstall Uninstall packages.

freeze Output installed packages in requirements format.

listList installed packages.

showShow information about installed packages.

search Search PyPI for packages.

wheel Build wheels from your requirements.

zip DEPRECATED. Zip individual packages.

unzip DEPRECATED. Unzip individual packages.

bundle DEPRECATED. Create pybundles.

helpShow help for commands.

General Options:

-h, --help Show help.

-v, --verbose Give more output. Option is additive, and can be used up to 3 times.

-V, --version Show version and exit.

-q, --quiet Give less output.

--log-file <path> Path to a verbose non-appending log, that only logs failures. This log is active by default at /root/.pip/pip.log.

--log <path> Path to a verbose appending log. This log is inactive by default.

--proxy <proxy>Specify a proxy in the form [user:passwd@]proxy.server:port.

--timeout <sec>Set the socket timeout (default 15 seconds).

--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup.

--cert <path> Path to alternate CA bundle.

linux版本太老了。升级一下也很容易。通常升级到2.7就可以了。然后重新安装cx_Oracle到python2.7目录里。不过你的arcgis既然有自己的python解释器，也当然有自己的包管理。你其实不需要重新安装python2.7只需要在arcgis环境里，执行它那个python2.7解释器，安装一个cx_Oracle到它自己的包管理目录里就可以了。

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