pandas Pyarrow 不安装 python 3.7（anaconda 5.3.0，windows x64 版本）
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/52769489/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Pyarrow does not install with python 3.7 (anaconda 5.3.0, windows x64 version)
提问by techvslife
I installed the 64-bit windows version of python 3.7 by installing anaconda 5.3.0. Then I tried installing pyarrow ("conda install pyarrow").
我通过安装 anaconda 5.3.0 安装了 64 位 Windows 版本的 python 3.7。然后我尝试安装 pyarrow（“conda install pyarrow”）。
Anaconda ended up DOWNGRADINGpython to 3.6. And things did not work so well thereafter (weird error messages). I ended up having to uninstall Anaconda and re-installing it (had to uninstall since it does not do repair or re-install if the program folder is not empty).
Anaconda 最终将python降级到 3.6。此后事情并没有那么顺利（奇怪的错误消息）。我最终不得不卸载 Anaconda 并重新安装它（必须卸载，因为如果程序文件夹不为空，它不会进行修复或重新安装）。
That leaves me python 3.7 but no pyarrow. Is there another package that will give me parquet support with python and pandas? Or is there a way to get pyarrow to work with python 3.7?
这给我留下了 python 3.7 但没有 pyarrow。是否有另一个软件包可以为我提供 python 和 pandas 的镶木地板支持？或者有没有办法让pyarrow与python 3.7一起工作？
UPDATE: As per Omri374's suggestion, I tried
更新：根据 Omri374 的建议，我尝试了
pip install pyarrow
That doesn't solve my separate anaconda rollback to python 3.6 problem (i.e., when doing "conda install pyarrow"), but it doesinstall pyarrow. Note that it gives the following output though--trying to update pip produced a rollback to python 3.6, so I don't recommend it:
这并不能解决我单独的 anaconda 回滚到 python 3.6 的问题（即，在执行“conda install pyarrow”时），但它确实安装了 pyarrow。请注意，它虽然提供了以下输出——尝试更新 pip 会导致回滚到 python 3.6，所以我不推荐它：
twisted 18.7.0 requires PyHamcrest>=1.9.0, which is not installed.
Installing collected packages: pyarrow
Successfully installed pyarrow-0.11.0
You are using pip version 10.0.1, however version 18.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
This is the pip version that comes with 64-bit win anaconda 5.3.0 (python 3.7):
这是 64 位 win anaconda 5.3.0 (python 3.7) 自带的 pip 版本：
>conda list pip
#Name Version Build Channel
pip 10.0.1 py37_0
p.s. Since pyarrow seems to need the conda-forge channel, this is my channel list ("conda config --show channels"): channels:
ps 由于 pyarrow 似乎需要 conda-forge 频道，这是我的频道列表（“conda config --show channels”）：频道：
- conda-forge
- anaconda-fusion
- defaults
回答by techvslife
The latest pyarrow package version solves the problem. I can now install pyarrow using anaconda under python 3.7:
最新的pyarrow包版本解决了这个问题。我现在可以在 python 3.7 下使用 anaconda 安装 pyarrow：
(base) C:\>conda install pyarrow
Solving environment: done
## Package Plan ##
environment location: C:\Users\xxx
added / updated specs:
- pyarrow
The following packages will be downloaded:
package | build
---------------------------|-----------------
pyarrow-0.11.0 | py37h33f27b4_0 1.5 MB
libboost-1.67.0 | hd9e427e_4 31.8 MB
conda-4.5.11 | py37_1000 654 KB conda-forge
gflags-2.2.1 | vc14_0 283 KB conda-forge
lz4-c-1.8.3 | he025d50_1000 254 KB conda-forge
xz-5.2.4 | h2fa13f4_1001 805 KB conda-forge
thrift-cpp-0.11.0 | vc14_2 2.2 MB conda-forge
arrow-cpp-0.11.0 | py37h8e05e8c_0 7.5 MB
glog-0.3.5 | h6538335_1 130 KB
zstd-1.3.3 | vc14_1 1.2 MB conda-forge
------------------------------------------------------------
Total: 46.2 MB
The following NEW packages will be INSTALLED:
arrow-cpp: 0.11.0-py37h8e05e8c_0
gflags: 2.2.1-vc14_0 conda-forge [vc14]
glog: 0.3.5-h6538335_1
libboost: 1.67.0-hd9e427e_4
lz4-c: 1.8.3-he025d50_1000 conda-forge
pyarrow: 0.11.0-py37h33f27b4_0
thrift-cpp: 0.11.0-vc14_2 conda-forge [vc14]
xz: 5.2.4-h2fa13f4_1001 conda-forge
zstd: 1.3.3-vc14_1 conda-forge [vc14]
The following packages will be UPDATED:
conda: 4.5.11-py37_0 --> 4.5.11-py37_1000 conda-forge
FURTHER UPDATE: I discovered that there is a problem affecting the conda-forge channel and the new version of python/anaconda. (Or there may be two problems.)
进一步更新：我发现存在影响 conda-forge 通道和新版本 python/anaconda 的问题。（或者可能有两个问题。）
What seems to solve the problem for now is to have only "defaults" in the channels list, not conda-forge. ("conda config --show channels") (But that may be only because the "defaults" channel does not have some problem update package.)
现在似乎可以解决问题的是频道列表中只有“默认值”，而不是 conda-forge。（“conda config --show channels”）（但这可能只是因为“defaults”频道没有一些有问题的更新包。）
The symptoms are these:
症状如下：
- Attempts to update anaconda trigger a rollback of python to 3.6:
- 尝试更新 anaconda 会触发 python 回滚到 3.6：
The following packages will be DOWNGRADED: ipykernel: 4.10.0-py37_0 --> 4.9.0-py36_1 pyarrow: 0.11.1-py37h33f27b4_0 --> 0.8.0-py36_vc14_0 conda-forge [vc14] python: 3.7.0-hea74fb7_0 --> 3.6.6-hea74fb7_0
The following packages will be DOWNGRADED: ipykernel: 4.10.0-py37_0 --> 4.9.0-py36_1 pyarrow: 0.11.1-py37h33f27b4_0 --> 0.8.0-py36_vc14_0 conda-forge [vc14] python: 3.7.0-hea74fb7_0 --> 3.6.6-hea74fb7_0
- Attempts to update give an (uncorrectable) error on the "automat" package:
- 尝试更新会在“automat”包上出现（无法纠正的）错误：
ERROR conda.core.link:_execute(502): An error occurred while installing package 'conda-forge::automat-0.7.0-py_1'. CondaError: Cannot link a source that does not exist. C:\Users\xxx\anaconda3\Scripts\conda.exe Running conda clean --packages may resolve your problem. Attempting to roll back. Rolling back transaction: Rolling back transaction: done CondaError: Cannot link a source that does not exist. C:\Users\xxx\anaconda3\Scripts\conda.exe Running conda clean --packages may resolve your problem.
ERROR conda.core.link:_execute(502): An error occurred while installing package 'conda-forge::automat-0.7.0-py_1'. CondaError: Cannot link a source that does not exist. C:\Users\xxx\anaconda3\Scripts\conda.exe Running conda clean --packages may resolve your problem. Attempting to roll back. Rolling back transaction: Rolling back transaction: done CondaError: Cannot link a source that does not exist. C:\Users\xxx\anaconda3\Scripts\conda.exe Running conda clean --packages may resolve your problem.
