如何在特定行的现有数组中添加数组？

Question

我正在尝试将新数组添加到第1行之后的另一个数组中

a=np.arange(1,17).reshape(4,4)
b=np.zeros((1,4),dtype=np.uint8)
c=np.concatenate((a,b),0)

当我尝试此操作时，它将其添加到最后一行之后

[[ 1  2  3  4]
 [ 5  6  7  8]
 [ 9 10 11 12]
 [13 14 15 16]
 [ 0  0  0  0]]

我想在第1行之后添加它，所以它应该看起来像这样

[[ 1  2  3  4]
 [ 5  6  7  8]
 [ 0  0  0  0]
 [ 9 10 11 12]
 [13 14 15 16]]

Answer 1

<Window x:Class="ChattBoxx.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:local="clr-namespace:ChattBoxx" mc:Ignorable="d" Title="ChattBoxx" Icon="c:/users/jc and jf/pictures/yolo.png" Height="450" Width="641"> <Grid Name="Grid"> <Grid.RowDefinitions> <RowDefinition Height="*" /> <!--<<< Will resize to the size of contents --> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <!--<<< Will resize to the size of contents --> </Grid.ColumnDefinitions> <TextBox Name="viewMessage" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" HorizontalAlignment="Left" Margin="27,29,0,123" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Center" Height="267" Width="391"/> <TextBox Name="Input" Keyboard.PreviewKeyDown="Input_PreviewKeyDown" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" HorizontalAlignment="Left" Margin="27,335,0,49" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Center" Width="245" Height="35"/> <Button Name="Send" Content="Send" Click="Send_Click" HorizontalAlignment="Left" Height="31" Margin="293,337,0,0" VerticalAlignment="Top" Width="78"/> <Menu Name="Menu" HorizontalAlignment="Left" Height="315" Margin="453,26,0,0" VerticalAlignment="Top" Width="162"> <MenuItem Name="Chatts" Header="Chatts" FontSize="32" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Height="46" Width="152"/> <MenuItem Name="MainChat" Click="Click" Header="Main Chat" FontSize="15"></MenuItem> </Menu> <Button Name="new" Click="New_Click" Content="New Chat" HorizontalAlignment="Left" Height="32" Margin="498,355,0,-17" VerticalAlignment="Top" Width="82"/> </Grid> </Window>

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