Python:使用回车和逗号打印不起作用 [英] python: print using carriage return and comma not working

问题描述

我需要循环打印一行(Python 3.x).已经四处查看了，我在代码中添加了这一行:

I need to print over one line in a loop (Python 3.x). Looking around on SO already, I put this line in my code:

print('{0} imported\r'.format(tot),)

但是，它在循环时仍会打印多行.我也尝试过

However, it still prints multiple lines when looped through. I have also tried

sys.stdout.write('{0} imported\r'.format(tot))

但这不会在控制台上显示任何内容 ...

but this doesn't print anything to the console...

有人知道这是怎么回事吗?

Anyone know what's going on with this?

推荐答案

在第一种情况下，某些系统会将\r视为换行符.在第二种情况下，您没有flush该行.试试这个:

In the first case, some systems will treat \r as a newline. In the second case, you didn't flush the line. Try this:

sys.stdout.write('{0} imported\r'.format(tot))
sys.stdout.flush()

正如Levon提醒我的那样，

在所有系统上也不需要刷新该行-但通常以这种方式使用\r时是个好主意.

Flushing the line isn't necessary on all systems either, as Levon reminds me -- but it's generally a good idea when using \r this way.

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