pandasql will not import : ImportError: cannot import name to_sql

Question

我在 linux 命令提示符下使用 pip 安装了 pandasql，并启动了 ipython 笔记本：

felix@xanadu ~ $ sudo pip install pandasql
[sudo] password for felix: 
Downloading/unpacking pandasql
  Downloading pandasql-0.6.2.tar.gz
  Running setup.py (path:/tmp/pip_build_root/pandasql/setup.py) egg_info for package pandasql

Installing collected packages: pandasql
  Running setup.py install for pandasql

Successfully installed pandasql
Cleaning up...
felix@xanadu ~ $ ipython notebook

然后尝试在 ipython 笔记本中导入 pandas 和它：

import pandas    
import pandasql

..它不开心，环顾四周但似乎没有任何地方有答案。这是它给出的错误消息：

--------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-c9fa37159ca4> in <module>()
      1 import pandas
----> 2 import pandasql

/usr/local/lib/python2.7/dist-packages/pandasql/__init__.py in <module>()
----> 1 from .sqldf import sqldf
      2 import os
      3 import pandas as pd
      4 
      5 

/usr/local/lib/python2.7/dist-packages/pandasql/sqldf.py in <module>()
      2 import pandas as pd
      3 import numpy as np
----> 4 from pandas.io.sql import to_sql, read_sql
      5 import re
      6 import os

ImportError: cannot import name to_sql

有人有什么想法吗？干杯

Answer 1

你绝对应该升级到 pandas 0.16.0:

sudo pip install -U pandas

刚刚看了0.13.1 and 0.16.0中pandas/io/sql.py的源码，to_sql()和read_sql()方法在旧版本中没有，虽然有在最新版本中。

在评论中总结我们的对话，为了成功构建 pandas，您需要安装 gcc、g++ 和 python-dev 包您系统的包管理器（apt-get、yum、zypper，等等）。如果您正在构建 Python 3，则需要 python3-dev 包。

如果您使用 Windows 和 Python 的标准 python.org 版本，使您的软件包保持最新的最简单方法是使用 Christoph Gohlke 的 Python Extension Packages for Windows repository. Many packages depend on his MKL-linked version of numpy, including pandas. The nice thing about all of these packages is that they are pre-compiled against both 32- and 64-bit versions of Python, and are generally available for Python 2.7, 3.3, and 3.4 (depending on the package, of course - some haven't been ported to Py3 yet). They are available in .whl格式，所以 installation/upgrading 和

一样简单

pip install -U name_of_package.whl

pandasql will not import : ImportError: cannot import name to_sql

pandasql will not import : ImportError: cannot import name to_sql

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