有谁知道如何获得命令快捷方式以在Jupyter笔记本中进行块缩进和缩进工作？？在Jupiter笔记本计算机命令组中，有一个命令“自动缩进选择”。当我在命令模式下输入control- /时，笔记本会阻止注释。？？我看不到其他任何涉及缩进的命令。？我似乎无法弄清楚
I have a database with multiple columns and rows. I want to locate within the database rows that meet certain criteria of a subset of the columns AND if it meets that criteria change the value of a different column in that same row.
I am prototyping with the following database '''
df = pd.DataFrame([[1, 2], [4, 5], [5, 5], [5, 9], [55, 55]], columns=['max_speed', 'shield'])
df['frcst_stus'] = 'current'
df
''' which gives the following result:
max_speed shield frcst_stus
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