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How do I create test and train samples from one dataframe with pandas?
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I would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]:...
How to get the contents of a webpage in a shell variable?
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You can use wget command to download the page and read it into a variable as:
content=$(wget ...
Execute and get the output of a shell command in node.js
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145
Thats the way I do it in a project I am working now.
var exec = require('child_process').exec...
java: HashMap not working
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cletuscletus
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TFS: Updating branch with changes from main
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write a shell script to ssh to a remote machine and execute commands
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There are multiple remote linux machines, and I need to write a shell script which will exe...
Can you nest html forms?
...a page but they should not be nested.
From the html5 working draft:
4.10.3 The form element
Content model:
Flow content, but with no form element descendants.
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What is the “-d” in “npm -d install”?
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edited Mar 6 at 19:55
Martijn Pieters♦
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Accessing localhost:port from Android emulator
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You can access your host machine with the IP address "10.0.2.2".
This has been designed in this way by the Android team. So your webserver can perfectly run at localhost and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If your emulator must ...
MySQL: determine which database is selected?
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edited Mar 20 '15 at 17:12
answered Nov 11 '11 at 15:56
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