python3。8下如何解决pandas报错Nomodulenamedampamp39bz2ampamp39问题

　　1 说明：
　　=====
　　1.1 不知道哪里出问题了，在使用pandas时报错，不能使用。Python 3.8.0 (default, Mar 18 2020, 21:36:59)  [GCC 6.3.0 20170516] on linux Type ＂help＂, ＂copyright＂, ＂credits＂ or ＂license＂ for more information. >>> import pandas as pd#报错 Traceback (most recent call last):   File ＂＂, line 1, in    File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/__init__.py＂, line 55, in      from pandas.core.api import (   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/core/api.py＂, line 29, in      from pandas.core.groupby import Grouper, NamedAgg   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/core/groupby/__init__.py＂, line 1, in      from pandas.core.groupby.generic import DataFrameGroupBy, NamedAgg, SeriesGroupBy   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/core/groupby/generic.py＂, line 60, in      from pandas.core.frame import DataFrame   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/core/frame.py＂, line 104, in      from pandas.core.generic import NDFrame, _shared_docs   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/core/generic.py＂, line 99, in      from pandas.io.formats import format as fmt   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/io/formats/format.py＂, line 75, in      from pandas.io.common import stringify_path   File ＂/usr/local/python3.8/lib/python3.8/site-packages/pandas/io/common.py＂, line 3, in      import bz2   File ＂/usr/local/python3.8/lib/python3.8/bz2.py＂, line 19, in      from _bz2 import BZ2Compressor, BZ2Decompressor ModuleNotFoundError: No module named ＂_bz2＂
　　1.2 怎么办？解决它！！
　　2 网上的办法基本都不行：
　　这种不行：https://www.cnblogs.com/lemon-le/p/11558971.html2、找到_bz2.cpython-36m-x86_64-linux-gnu.so文件  如果在机器上没有的话，可以到这里下载： 链接：https://pan.baidu.com/s/1GzUY4E0G2yVUfqxHOIzn1A  提取码：oiwh    3、修改文件名   如果你的python版本是3.6，那就是36m，我的是python3.8，得把文件名改为38m，并拷贝到python3.8的安装目录  mv _bz2.cpython-36m-x86_64-linux-gnu.so _bz2.cpython-38m-x86_64-linux-gnu.so cp _bz2.cpython-38m-x86_64-linux-gnu.so /usr/local/python3.8/lib/python3.8/lib-dynload/
　　3 从新编译安装python3.8
　　3.1 我自己的安装记录https://www.toutiao.com/i6805551238524961288/
　　3.2 环境：
　　华为笔记本电脑，深度deepin-linux操作系统
　　3.3 先安装依赖：sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade sudo apt-get install build-essential python-dev python-setuptools python-pip python-smbus sudo apt-get install build-essential libncursesw5-dev libgdbm-dev libc6-dev sudo apt-get install zlib1g-dev libsqlite3-dev tk-dev sudo apt-get install libssl-dev openssl sudo apt-get install libffi-dev
　　3.4 以root下进入root@xgj-PC:~# cd /opt/Python-3.8.0 root@xgj-PC:/opt/Python-3.8.0#
　　3.5 清楚曾经的安装make clean
　　3.6 保险一点，再安装依赖：基本不需要了sudo apt-get install openssl sudo apt-get install libssl-dev  sudo apt-get install libssl-dev openssl sudo apt-get install libffi-dev  sudo apt-get install zlib1g-dev libsqlite3-dev tk-dev sudo apt-get install build-essential libncursesw5-dev libgdbm-dev libc6-dev sudo apt-get install build-essential python-dev python-setuptools python-pip python-smbus
　　3.7 从新编译安装./configure --prefix=/usr/local/python3.8 make make install
　　3.8 建立软连接，可以省略，因为原来就有的ln -s /usr/local/python3.8/bin/python3.8 /usr/bin/python3.8 ln -s /usr/local/python3.8/bin/pip3.8 /usr/bin/pip3.8
　　3.9 升级pip，本机pip3.8 install --upgrade pip
　　4 查看版本和测试，没报错，成功！！root@xgj-PC:/opt/Python-3.8.0# pip3.8 --version pip 20.1.1 from /usr/local/python3.8/lib/python3.8/site-packages/pip (python 3.8) root@xgj-PC:/opt/Python-3.8.0# python3.8 Python 3.8.0 (default, May 27 2020, 21:07:57)  [GCC 6.3.0 20170516] on linux Type ＂help＂, ＂copyright＂, ＂credits＂ or ＂license＂ for more information. >>> import pandas as pd >>>
　　5 举个可视化利用pandas的matplotlib作图的例子：
　　5.1 代码：import matplotlib.pyplot as plt import matplotlib # 第一步，导出通用字体设置 from matplotlib import font_manager  #第二步，引出字体模块和位置 my_font = font_manager.FontProperties(fname=＂hwfs.ttf＂,size=20) #如果不设置，就是默认大小，这里的15=1500,6=600,大小为1500和600像素 plt.figure(figsize=(15, 6)) #5组数据的比较 price = [39.5, 39.9, 45.4, 38.9, 33.34] plat=[＂亚马逊＂, ＂当当网＂, ＂中国图书网＂, ＂京东＂, ＂天猫＂] ＂＂＂ 绘制水平条形图方法barh 参数一：y轴 参数二：x轴 ＂＂＂ plt.barh(range(5), price, height=0.7, color=＂pink＂, alpha=0.8) # 从下往上画 plt.yticks(range(5), plat,fontproperties=my_font) plt.xlim(30,47) #30~47，各1 #第三步，增加u和fontproperties=my_font，可加u可不加u plt.xlabel(u＂价格＂,fontproperties=my_font) plt.ylabel(u＂公司＂,fontproperties=my_font) plt.title(u＂不同平台图书价格＂,fontproperties=my_font)  #这是设置柱状条上面的数值，来自price for x, y in enumerate(price):     plt.text(y + 0.2, x - 0.1, ＂%s＂ % y)  plt.show()
　　5.2 效果图：成功！！
　　5.3 报错：成功！一次解决报错记录。 自己能解决报错，是每一个程序员或者说学习编程人员，尤其是python爱好者的基本能力。
　　===自己整理并分享出来，祝大家也能遇到问题自己解决，小白看了都会===
　　喜欢的点赞、转发、收藏和评论。