小编Cas*_*sey的帖子

How can I print the status of a Jupyter notebook on the previous line? I think I'm looking for something like clear_output(), but for only a single line.

Sample code:

from IPython.display import clear_output
import time
print('This is important info!')
for i in range(100):
    print('Processing BIG data file {}'.format(i))
    time.sleep(0.1)
    clear_output(wait=True)
    if i == 50:
        print('Something bad happened on run {}.  This needs to be visible at the end!'.format(i))
print('Done.')

When this runs it gives the behavior of over-writing …

这听起来像一个非常简单的问题,所以我很惊讶搜索没有产生任何结果:我想初始化一个常量列表并用另一个源列表扩展它.

这有效:

remoteList = [2, 3, 4]
myList = [0,1]
myList.extend(remoteList)

这意味着它给出了预期的结果:

myList
[0, 1, 2, 3, 4]

但是,在一行中执行列表初始化不起作用,myList未定义:

remoteList = [2, 3, 4]
myList = [0,1].extend(remoteList)

有没有办法初始化列表并用另一个列表(以pythonic方式)在一行中扩展它？为什么我的一行示例不起作用,或者至少产生某种列表？