Question

当我在我的osx上安装ipython并运行它时，我收到以下警告：

 /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/
 site-packages/IPython/utils/rlineimpl.py:96:
 RuntimeWarning: Leopard libedit detected - readline will not be wel
 behaved including some crashes on tab completion, and incorrect
 history navigation. It is highly recommended that you install
 readline, which is easy_installable with: 'easy_install readline'

我已经安装了readline，并且不使用最初安装在/Library/Frameworks/Python.framework/Versions/2.7/bin/python$中的系统python。 /usr/bin/python指向版本2.7，如下所示

uname -a
Darwin macbook.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 
16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386

$sudo pip install readline ipython

$ipython --version
0.11

$/usr/bin/python --version # 
Python 2.7.1 

$which python
/Library/Frameworks/Python.framework/Versions/2.7/bin/python

我已在Python sys.path modification not working中阅读了该问题 - 我向/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/readline-6.2.1-py2.7.egg-info添加了/Library/Frameworks/Python.framework/Versions/2.7/bin/ipython，现在看起来像这样：http://pastebin.com/raw.php?i=dVnxufbS

但我无法弄清楚为什么会收到以下错误：

File
"/Library/Frameworks/Python.framework/Versions/2.7/bin/ipython",
line 9
sys.path.insert(0,"/Library/Frameworks/Python.framework/Versions/2.7/lib/
python2.7/site-packages/readline-6.2.1-py2.7.egg-info")

我不认为上述路径是一个问题，我的目标是让ipython工作而不会抱怨readline，即使它已经安装并正确导入。

Answer 1

当pip安装readline时，它永远不会被导入，因为readline.so位于site-packages中，最终位于lib-dynload中的libedit System one之后（OSX Python路径顺序很奇怪）。 easy_install -a readline实际上会安装可用的readline。

所以你可以使用easy_install，或者使用pip和muck about你的PYTHONPATH / sys.path（这实际上意味着：不要使用PIP）。

关于IPython列表的更多细节（虽然关于这个问题确实没有特定的IPython）：http://mail.scipy.org/pipermail/ipython-user/2011-September/008426.html

编辑：关于virtualenv的额外说明。

virtualenv中有一个错误＆lt; 1.8.3，创建环境时，readline无法正确暂存。

Answer 2

如果你不介意用你的PYTHONPATH来解决问题，那么你可以在这里摆脱那个讨厌的警告：

# move site-packages to the front of your sys.path
import sys
for i in range(len(sys.path)):
    if sys.path[i].endswith('site-packages'):
        path = sys.path.pop(i)
        sys.path.insert(0, path)
        break

如果您正在使用Django，可以将其放在site-packages / django / core / management / commands / shell.py的ipython方法中，以便在运行{{1}时运行它}。

Answer 3

对此答案的未来读者的补充说明。

在我的情况下 - 运行IPython的MacPorts安装 - / opt / local / bin /中有几个版本的easy_install，但没有指向最新版本的非版本符号链接。执行easy_install-2.7 -a readline工作。

Answer 4

我还使用brew安装的ipython，但遇到类似问题。

⚡ easy_install-3.7 -a readline
Searching for readline
Reading https://pypi.org/simple/readline/
Download error on https://pypi.org/simple/readline/: unknown url type: https -- Some packages may not be found!
Couldn't find index page for 'readline' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.org/simple/
Download error on https://pypi.org/simple/: unknown url type: https -- Some packages may not be found!
No local packages or working download links found for readline
error: Could not find suitable distribution for Requirement.parse('readline') (--always-copy skips system and development eggs)

解决方案：

⚡ brew install readline
Updating Homebrew...
Warning: readline 7.0.5 is already installed, it's just not linked
You can use `brew link readline` to link this version.
⚡ brew link readline
Warning: readline is keg-only and must be linked with --force
⚡ brew link readline --force
Linking /usr/local/Cellar/readline/7.0.5... 16 symlinks created

结果：

⚡ ipython
Python 3.7.2 (default, Dec 27 2018, 07:35:06)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.2.0 -- An enhanced Interactive Python. Type '?' for help.
>>> ~/.pyrc loaded successfully

ipython抱怨readline

4 个答案: