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Drop columns whose name contains a specific string from pandas DataFrame
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import pandas as pd
import numpy as np
array=np.random.random((2,4))
df=pd.DataFrame(array, columns=('Test1', 'toto', 'test2', 'riri'))
print df
Test1 toto test2 riri
0 0.923249 0.572528 0.845464 0.144891
1 0.020438 0.332540 0.144455 0.741412
cols = [c for c...
What is the optimal length for an email address in a database?
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134
The maximum length of an email address is 254 characters.
Every email address is composed of tw...
How can I calculate the number of lines changed between two commits in git?
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edited Oct 3 '14 at 5:58
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How to get current timestamp in milliseconds since 1970 just the way Java gets
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247
If you have access to the C++ 11 libraries, check out the std::chrono library. You can use it t...
Android emulator shows nothing except black screen and adb devices shows “device offline”
...rted working again.
The "Use Host GPU" does only work for me with Android 4.2 as "Target".
Update 26.02.2014:
There a two hints in the Configuring Graphics Acceleration chapter from developer.android.com.
Caution: As of SDK Tools Revision 17, the graphics acceleration feature for the emulator...
Markdown to create pages and table of contents?
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edited Feb 4 '18 at 20:24
answered Aug 19 '12 at 23:38
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Difference between SRC and HREF
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answered Oct 17 '11 at 14:04
apnerveapnerve
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How can I disable the UITableView selection?
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INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
...始行
CL = 光标结束行
DH = 行
DL = 列
4
置显示页
AL = 显示页号
5
屏幕初始化或上卷
6
屏幕初始化或上卷
AL = 上卷行数
AL =0全屏幕为...