我试过谷歌搜索，但没有找到太多/任何东西，以下也没有帮助......
https://ipython.org/ipython-doc/3/interactive/magics.html
典型的用例是：
In [31]: from sqlalch<TAB>
Caching the list of root modules, please wait!
(This will only be done once - type '%rehashx' to reset cache!)
em
Caching the list of root modules, please wait!
(This will only be done once - type '%rehashx' to reset cache!)
Caching the list of root modules, please wait!
(This will only be done once - type '%rehashx' to reset cache!)
sqlalchemy
自己运行%rehashx也无济于事。我也安装了 pip pyreadline。
任何想法出了什么问题？%rehashx存储信息在哪里？
编辑
的输出get_ipython().db['rootmodules_cache']给出以下内容：
for key in d.keys(): print key
# /usr/local/bin
# /usr/lib/python3/dist-packages
# /usr/lib/python3.5
# /usr/local/lib/python3.5/dist-packages <- should be in here
# /usr/lib/python3.5/lib-dynload
# /usr/lib/python35.zip
# /usr/local/lib/python3.5/dist-packages/IPython/extensions
# /usr/lib/python3.5/plat-x86_64-linux-gnu
# /home/user/.ipython
import sqlalchemy
sqlalchemy.__file__
# /user/local/lib/python3.5/dist-packages/sqlalchemy/__init__.py
但是 sqlalchemy 不在列表中
d = get_ipython().db['rootmodules_cache']
'sqlalchemy' in d['/user/local/lib/python3.5/dist-packages']
# False