Python can use zbar lib parse the qrcode information, There shows how to install the zbar lib and py...
Linux
Linux
Linux
Upgrade the yum source for centos system
centos yum source upgrade and common libs and software
Python
Tornado asynchronous web request client example
Tornado is a python web Server, which is better for solving long connection request or IO asynchrono...
The CentOS common must install libs.
The new CentOS initial must install system libraries, which can make the system environment run smoo...
Python
Python recursive optimization
the beautiful style python recursive code, avoids depth exceeded.
Python html escape and unescape
Python escape or unescape html special words methods. 1、The cgi module that comes with Python has an...
pip3 +python3.7 Error: There was a problem confirming the ssl certificate
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection brok...
OrderedDict and json loads keep the origin order
OrderedDict is the sub object of dict, it will remember the origin order of the content. When compar...
Mysql
Mysql partition search must scan the first partition
Mysql partition search optimization basically you should create a first partition that contains valu...
Mysql master slave sync error: the slave’s relay log is corrupted
If the disk space is not enough, the mysql will not be login or the slave can't to write any data. I...