擅长:python、mysql、java
<p><strong>下面是一个简单的例子,Python字符串被打印到stdout被替换</strong></p>
<pre><code>import sys
import time
for i in range(3):
message = "testing " + i
sys.stdout.write("\r" + stuff) #The \r is carriage return without a line
#feed, so it erases the previous line.
sys.stdout.flush()
time.sleep(1)
</code></pre>
<p>上图:</p>
^{pr2}$
<p>对于Stdout,随后的2次迭代将其删除并替换为“testing 2”,然后“testing 3”。在</p>