spark默认使用的Python版本为2,可以修改.bashrc文件让spark默认使用python3。修改.bashrc增加如下行:
# anaconda
export ANACONDA_HOME=/home/dbuser/anaconda3/
export PATH=$ANACONDA_HOME:$PATH
# spark
export PYSPARK_PYTHON=/home/dbuser/anaconda3/bin/python3
spark默认使用的Python版本为2,可以修改.bashrc文件让spark默认使用python3。修改.bashrc增加如下行:
# anaconda
export ANACONDA_HOME=/home/dbuser/anaconda3/
export PATH=$ANACONDA_HOME:$PATH
# spark
export PYSPARK_PYTHON=/home/dbuser/anaconda3/bin/python3
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
在家办公于是将工作环境换到了mac,配置环境的时候安装mysqlclient出现了下面的错误:
(venv_home_mini) obaby@Obabys-Mac-mini taichigameserver % pip3 install mysqlclient
Collecting mysqlclient
Using cached https://files.pythonhosted.org/packages/d0/97/7326248ac8d5049968bf4ec708a5d3d4806e412a42e74160d7f266a3e03a/mysqlclient-1.4.6.tar.gz
Complete output from command python setup.py egg_info:
/bin/sh: mysql_config: command not found
/bin/sh: mariadb_config: command not found
/bin/sh: mysql_config: command not found
Traceback (most recent call last):
File "", line 1, in
File "/private/var/folders/gf/qbbv4crd5m9f1vkz5066dvyw0000gn/T/pip-install-m5gv0sbr/mysqlclient/setup.py", line 16, in
metadata, options = get_config()
File "/private/var/folders/gf/qbbv4crd5m9f1vkz5066dvyw0000gn/T/pip-install-m5gv0sbr/mysqlclient/setup_posix.py", line 61, in get_config
libs = mysql_config("libs")
File "/private/var/folders/gf/qbbv4crd5m9f1vkz5066dvyw0000gn/T/pip-install-m5gv0sbr/mysqlclient/setup_posix.py", line 29, in mysql_config
raise EnvironmentError("%s not found" % (_mysql_config_path,))
OSError: mysql_config not found
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/gf/qbbv4crd5m9f1vkz5066dvyw0000gn/T/pip-install-m5gv0sbr/mysqlclient/
网上搜了一下说安装mysql-connector-c ,但是安装之后依然报错。于是尝试安装mysql,安装mysql之后解决该问题,其实出问题的地方在于这个命令找不到,如果直接在终端中执行mysql_config如果能够执行成功,那么只需要创建个软连接就可以解决这个问题。
(venv_home_mini) obaby@Obabys-Mac-mini taichigameserver % mysql_config
Usage: /usr/local/bin/mysql_config [OPTIONS]
Compiler: AppleClang 11.0.0.11000033
Options:
--cflags [-I/usr/local/Cellar/mysql/8.0.19/include/mysql ]
--cxxflags [-I/usr/local/Cellar/mysql/8.0.19/include/mysql ]
--include [-I/usr/local/Cellar/mysql/8.0.19/include/mysql]
--libs [-L/usr/local/Cellar/mysql/8.0.19/lib -lmysqlclient -lssl -lcrypto]
--libs_r [-L/usr/local/Cellar/mysql/8.0.19/lib -lmysqlclient -lssl -lcrypto]
--plugindir [/usr/local/Cellar/mysql/8.0.19/lib/plugin]
--socket [/tmp/mysql.sock]
--port [0]
--version [8.0.19]
--variable=VAR VAR is one of:
pkgincludedir [/usr/local/Cellar/mysql/8.0.19/include/mysql]
pkglibdir [/usr/local/Cellar/mysql/8.0.19/lib]
plugindir [/usr/local/Cellar/mysql/8.0.19/lib/plugin]
安装命令:
brew install mysql
如果没有安装homebrew,通过下面的命令安装:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
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
对于美女的热爱无法自拔 😆 ,经常会去搜索一些美女图片,下载下来,然后找时间慢慢欣赏。主要用途是用作电脑桌面手机桌面,通常会百度或者bing去搜索下找到图片下载。相对来说能够直接用作桌面的图片并不多,多数是尺寸问题,并不是十分合适。但是即使不能直接用,可以用ps修改下图片尺寸,或者欣赏也是好的啊。 🙂
以前曾经从一个网站mzitu.com 爬了一些图片,但是最近访问的时候却发现网站挂了~~
在计算理论中,确定有限状态自动机或确定有限自动机(英语:deterministic finite automaton, DFA)是一个能实现状态转移的自动机。对于一个给定的属于该自动机的状态和一个属于该自动机字母表{\displaystyle \Sigma }Σ的字符,它都能根据事先给定的转移函数转移到下一个状态
DFA((Deterministic Finite automation))确定性的有穷状态自动机: 从一个状态输入一个字符集合能到达下一个确定的状态。如图:
如上图当AB状态输入a得到状态aB,状态aB输入b得到状态ab; 状态AB输入b得到状态Ab,状态Ab输入a得到状态ab。