在第一个示例中,我们将两个Unicode字符串保存在一个文件中,同时委托编解码任务对它们进行编码。
# -*- coding: utf-8 -*-
import codecs
cities = [u'Düsseldorf', u'天津市']
with codecs.open("cities", "w", "utf-8") as f:
for c in cities:
f.write(c)
现在我们做同样的事情,首先将两个名称保存到redis,然后将它们读回并保存到一个文件中。因为我们所读到的
我有以下几个类:
public class Student {
private Long id ;
private String firstName;
private String lastName;
private Set<Enrollment> enroll = new HashSet<Enrollment>();
//Setters and getters
}
public class Enrollment {
private Student student;
private Course course;
Lon
我把我的电容式液晶显示器连接到tiny6410上,并在上面安装linux。我还将friendlyarm.ini更改为:
#This line cannot be removed. by FriendlyARM(www.arm9.net)
CheckOneButton=No
Action=Install
OS= Linux
LCD-Mode = No
LCD-Type = S70
LowFormat = No
VerifyNandWrite = No
CheckCRC32=No
StatusType = Beeper| LED
#################### Linux #
如果我将cat命令保存到字符串中,然后执行它,那么我将得到一个错误。
linux# cmd="cat /data/test/test.tx* | grep toto"
linux# eval '$cmd'
cat: |: No such file or directory
cat: grep: No such file or directory
cat: toto: No such file or directory
即使是
linux# $cmd
cat: |: No such file or directory
cat: grep: No such file
我正试图在Ubuntu 17.10上安装这个ASUS ac56适配器。我已经从Ubuntu 17.04升级了。Github的驱动程序包以及设备附带的专有驱动程序都无法工作。下面附加了在make过程中遇到的错误。
^~~~~~~~~
cc1: some warnings being treated as errors
scripts/Makefile.build:302: recipe for target '/home/unispirited/DR_USB_AC56_4314_Linux/RTL8812AU_linux_v4.3.13_14061.20150