如何在iOS中显示控制台日志。
我试过>>> import pandas as pd
>>>
>>> df1 = pd.DataFrame({'a': [1, 2, 3, 4], 'b': [ 8, 7, 6, 5]})
>>> df1
a b
0 1 8
1 2 7
2 3 6
3 4 5
>>>
>>> s1 = df1.loc[df1['a']<=2, :]
>>> s1
a b
0 1 8
1 2 7
>>> s1['b'] = 0
__main__:1: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
>>> df1
a b
0 1 8
1 2 7
2 3 6
3 4 5
>>> s1.loc[:, 'b'] = 0
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/core/indexing.py:508: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
self.obj[item_labels[indexer[info_axis]]] = value
>>> df1
a b
0 1 8
1 2 7
2 3 6
3 4 5
>>> s2 = df1[df1['a']<=2] # next try: # this seems to create a detached copy of df1
>>> s2
a b
0 1 8
1 2 7
>>> s2.loc[:,'b']=0
>>> df1 # df1 didn't change :-(
a b
0 1 8
1 2 7
2 3 6
3 4 5
>>> s2 # ... only filtered copy of df1 did.
a b
0 1 0
1 2 0
命令，
但我可以显示控制台日志。
我的应用在设备上移动。
请问我如何显示控制台日志。
答案 0 :(得分：0)
不是将标志添加到构建步骤，而是将其添加到运行中。
int x = 0;
eventHandler = new EventHandler(this);
eventHandler.start();
eventHandler.createEvent("Change X Value", 800, new EventHandler.OnEventListener() {
@Override
public void onFinished() {
//x is not declared final so it will not work
x = 5;
}
});