小编Har*_*aze的帖子

我已成功在本地计算机上安装Python 3.4和Python 3.6,但无法安装包pip3.

执行时pip3 install <package>,我收到以下与SSL相关的错误:

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting <package>
  Could not fetch URL https://pypi.python.org/simple/<package>/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
  Could not find a version that satisfies the requirement <package> (from versions: )
No matching distribution found for <package>

如何修复我的Python3.x安装,以便我可以安装包pip install …

当我阅读C语言并进行1-10练习时,有一个问题让我感到困惑.

据说当我输入一个退格键时,该字符由控制台驱动程序处理而不是传递给程序,所以我能做的就是创建一个嵌入了退格的文件.但是,无论我直接输入'\ b,它似乎都没用'或者按Ctrl + H.

当我按下时Ctrl + H,屏幕将显示"\ b",但是当我运行该程序时,程序似乎仍会将其视为两个字符'\'和'b'.无论我输入什么,它在运行程序时都不会显示"\ backspace".

我该怎么做才能使程序将其识别为退格字符？

我的代码如下:

#include <stdio.h>
int main()
{
    int c;
    while((c=getchar())!=EOF){
        if(c=='\t')
            printf("\\t");
        else if(c=='\\')
            printf("\\\\");
        else if(c=='\b')
                 printf("\\backspace");
             else
                 putchar(c);
     }
}