centos7.9安装python 3.6.8 import pandas UserWarning: Could not import the lzma module

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#python #pandas #linux

文章详细描述了在Linux环境下安装Python3.6.8的过程，包括依赖库的安装，然后通过编译方式安装Python。在安装后，遇到pandas模块导入lzma模块失败的问题，通过安装xz-devel和backports.lzma并修改lzma.py文件来解决了该问题。

python环境安装

# 依赖安装
yum install libffi-devel -y
yum install zlib-devel -y
yum install bzip2-devel -y
yum install ncurses-devel -y
yum install sqlite-devel -y
yum install readline-devel -y
yum install tk-devel -y
yum install openssl-devel -y

# 编译安装python
tar -zxvf Python-3.6.8.tgz
cd Python-3.6.8
./configure --prefix=/usr/local/python3
make && make install


# 安装模块
pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple pandas
pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple requests

# 问题
/usr/local/python3/lib/python3.6/site-packages/pandas/compat/__init__.py:120: UserWarning: Could not import the lzma module.

# 解决：
yum install -y xz-devel
python3 -m pip install backports.lzma

# 修改文件/usr/local/python3/lib/python3.6/lzma.py

from _lzma import *
from _lzma import _encode_filter_properties, _decode_filter_properties

改为：

try:
   from _lzma import *
   from _lzma import _encode_filter_properties, _decode_filter_properties
except ImportError:
    from backports.lzma import *
    from backports.lzma import _encode_filter_properties, _decode_filter_properties