ubuntu – 第 3 页

ModuleNotFoundError: No module named ‘cryptography.hazmat.bindings._padding’

2020年6月18日没有评论

ubuntu下执行命令出现如下错误：

ubuntu@ip-172-31-11-253:~/nineuu_spider/Maomi$ python3 maomi.py
Traceback (most recent call last):
  File "maomi.py", line 8, in 
    from cryptography.hazmat.primitives import padding
  File "/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/padding.py", line 13, in 
    from cryptography.hazmat.bindings._padding import lib
ModuleNotFoundError: No module named 'cryptography.hazmat.bindings._padding'

但是实际上cryptography模块已经安装了：

如果要解决这个错误，安装paramiko即可：

pip3 install paramiko

Linux『Linux』

ubuntu uwsgi No module named ‘django’

2020年5月12日没有评论

ubuntu uwsgi 服务器启动之后链接服务器提示500，查看系统日志发现没有找到django模块。但是通过pip命令可以看到已经成功安装了。

猜测可能是python路径搜索问题导致的，随便搜了一下找到这么一篇文章：https://blog.csdn.net/dqchouyang/article/details/78762432

后台开发『BackEnd』

ubuntu 18.04 pip3 install mysqlclient

2020年1月13日没有评论

不知道是阿里云的问题还是ubuntu本身的问题，今天安装mysqlclient提示：

/usr/bin/ld: cannot find -lssl
/usr/bin/ld: cannot find -lcrypto
collect2: error: ld returned 1 exit status
error: command ‘x86_64-linux-gnu-gcc’ failed with exit status 1

网上搜了一下没有发现类似的错误信息，于是转换思路直接搜索: /usr/bin/ld: cannot find -lssl 在这篇文章看到了解决方案：

https://blog.51cto.com/eminzhang/1285705

程序设计『Programing』

ubuntu 16.04 uwsgi自启动

2018年12月24日没有评论

网上的关于uwsgi的自启动的方法还是挺多的，具体搜索一下就知道了，这里简单的写一下官方推荐的方法，通过systemd启动服务。如果用这个方法需要首先确定systemd的版本大于211。

通过下面的命令获取systemd版本信息：

root@mars:/etc/systemd/system# systemctl --version
systemd 229
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

按照官方的文档编写service文件，放入/etc/systemd/system目录下然后执行

systemctl start emperor.uwsgi.service即可启动服务。service文件如下：

[Unit]
Description=uWSGI Emperor
After=syslog.target

[Service]
ExecStart=/usr/local/bin/uwsgi --ini /var/www/html/project/uwsgi.ini
# Requires systemd version 211 or newer
RuntimeDirectory=uwsgi
Restart=always
KillSignal=SIGQUIT
Type=notify
StandardError=syslog
NotifyAccess=all

[Install]
WantedBy=multi-user.target

这个脚本需要注意两个地方，一个是uwsgi的可执行文件路径，另外一个是uwsgi.ini配置文件路径。可执行文件路径可以通过whois uwsgi获取。

博客相关『Blogger/WordPress』

certbot-auto 阿里云配置安装

2017年1月14日没有评论

在国内的服务器上配置任何的服务都要费一番折腾，首先，国内的服务器连接国外的更新源本身就有问题。效率低还可以忍受，但是直接连不上服务器这个就没什么办法了，只能更换更新源。在《阿里云蛋疼的pip》一文中为了能够正常的使用pip，替换了默认的服务器，修改成了http://mirrors.aliyun.com/pypi/simple/ 这个源，但是也是忧郁这个蛋疼的源出现了各种问题。

在执行

./path/to/certbot-auto renew --quiet --no-self-upgrade

的时候会提示很多错误信息，找不到各种lib。

Had a problem while installing Python packages.

pip prints the following errors: 
=====================================================
Collecting argparse==1.4.0 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 11))
  Downloading http://mirrors.aliyun.com/pypi/packages/f2/94/3af39d34be01a24a6e65433d19e107099374224905f1e0cc6bbe1fd22a2f/argparse-1.4.0-py2.py3-none-any.whl
Collecting pycparser==2.14 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 17))
  Downloading http://mirrors.aliyun.com/pypi/packages/6d/31/666614af3db0acf377876d48688c5d334b6e493b96d21aa7d332169bee50/pycparser-2.14.tar.gz (223kB)
Collecting cffi==1.4.2 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 21))
  Downloading http://mirrors.aliyun.com/pypi/packages/92/00/c8670a2898ab7121cdac3b59f4307977a86e08a59efd662f6c05200a2f11/cffi-1.4.2.tar.gz (365kB)
Collecting ConfigArgParse==0.10.0 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 38))
  Downloading http://mirrors.aliyun.com/pypi/packages/d0/b8/8f7689980caa66fc02671f5837dc761e4c7a47c6ca31b3e38b304cbc3e73/ConfigArgParse-0.10.0.tar.gz
Collecting configobj==5.0.6 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 40))
  Downloading http://mirrors.aliyun.com/pypi/packages/64/61/079eb60459c44929e684fa7d9e2fdca403f67d64dd9dbac27296be2e0fab/configobj-5.0.6.tar.gz
Collecting cryptography==1.5.3 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 42))
  Downloading http://mirrors.aliyun.com/pypi/packages/6c/c5/7fc1f8384443abd2d71631ead026eb59863a58cad0149b94b89f08c8002f/cryptography-1.5.3.tar.gz (400kB)
Collecting enum34==1.1.2 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 65))
  Downloading http://mirrors.aliyun.com/pypi/packages/6f/e9/08fd439384b7e3d613e75a6c8236b8e64d90c47d23413493b38d4229a9a5/enum34-1.1.2.tar.gz (46kB)
Collecting funcsigs==0.4 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 68))
  Downloading http://mirrors.aliyun.com/pypi/packages/5e/9f/025d4c92c6a1a94313cdf0813cd76f5700f8e5434fa15165090a6446ae22/funcsigs-0.4-py2.py3-none-any.whl
Collecting idna==2.0 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 71))

  Downloading http://mirrors.aliyun.com/pypi/packages/7c/75/b566d769455929ee6ab308d8a1c6c5aecc4928e72b25d42dd019c99f7015/idna-2.0-py2.py3-none-any.whl (61kB)
Collecting ipaddress==1.0.16 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 74))
  Downloading http://mirrors.aliyun.com/pypi/packages/23/6a/813ac29a01e4c33c19c2bded98ac3d4266ebbf0bd2c0eb0020e1c969958d/ipaddress-1.0.16-py27-none-any.whl
Collecting linecache2==1.0.0 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 77))
  Downloading http://mirrors.aliyun.com/pypi/packages/c7/a3/c5da2a44c85bfbb6eebcfc1dde24933f8704441b98fdde6528f4831757a6/linecache2-1.0.0-py2.py3-none-any.whl
Collecting ordereddict==1.1 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 80))
  Downloading http://mirrors.aliyun.com/pypi/packages/53/25/ef88e8e45db141faa9598fbf7ad0062df8f50f881a36ed6a0073e1572126/ordereddict-1.1.tar.gz
Collecting parsedatetime==2.1 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 82))
  Downloading http://mirrors.aliyun.com/pypi/packages/85/1f/13fc06097e516f6259d62cea502b116451321c96e18a9d0fff9da3442e02/parsedatetime-2.1-py2-none-any.whl
Collecting pbr==1.8.1 (from -r /tmp/tmp.eLMZJv8t9Y/letsencrypt-auto-requirements.txt (line 85))

Linux『Linux』

Ubuntu 14.04 Pycharm 桌面快捷方式

2016年3月31日没有评论

网上关于ubuntu安装pycharm的文章最后的桌面图标的创建都千篇一律，可能很多人压根都没试试到底能不能用。这里贴个能用的图标代码：

#!/usr/bin/env xdg-open

[Desktop Entry]
Categories=Development;
Comment[zh_CN]=
Comment=
Exec=/home/obaby/soft/pycharm-2016.1/bin/pycharm.sh %f
GenericName[zh_CN]=IDE
GenericName=IDE
Icon=/home/obaby/soft/pycharm-2016.1/bin/pycharm.png
MimeType=
Name[zh_CN]=PyCharm
Name=PyCharm
Path=
StartupNotify=true
Terminal=false
Type=Application
X-DBUS-ServiceName=
X-DBUS-StartupType=
X-KDE-SubstituteUID=false
X-KDE-Username=obaby

程序设计『Programing』