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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
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I believe DataFrame.fillna() will do this for you.
Link to Docs for a dataframe and for a Series.
Example:
In [7]: df
Out[7]:
0 1
0 NaN NaN
1 -0.494375 0.570994
2 NaN NaN
3 1.876360 -0.229738
4 NaN NaN
In [8]: df.fill...
How to generate unique ID with node.js
How to set a variable value with database query callback? How I can do it?
13 Answers
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What is the size limit of a post request?
Sorry if this is duplicate,I would think it would be but couldn't find anything.
9 Answers
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What is the syntax rule for having trailing commas in tuple definitions?
...rom a set of function arguments, operator precedence, or to allow line breaks.
The trailing comma for tuples, lists, or function arguments is good style especially when you have a long initialisation that is split over multiple lines. If you always include a trailing comma then you won't add anothe...
In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?
Is there a corresponding X mark to ✓ ( ✓ )? What is it?
4 Answers
4
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What characters do I need to escape in XML documents?
...he special character is used.
The examples can be validated at the W3C Markup Validation Service.
Text
The safe way is to escape all five characters in text. However, the three characters ", ' and > needn't be escaped in text:
<?xml version="1.0"?>
<valid>"'></valid>
At...
Installing SetupTools on 64-bit Windows
...n OS X) there is a bug in the Windows installer. I stumbled across this workaround, which might help - basically, you create your own registry value HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Python\PythonCore\2.6\InstallPath and copy over the InstallPath value from HKEY_LOCAL_MACHINE\SOFTWARE\Python\P...
Android - Camera preview is sideways
...d I had to initially put in logging statements in each of the rotation checks to say what the rotation was and then debugged on the device and watched the logCat output while I rotated the device. For the HTC Desire, 0 was the phone as you would have expected (portrait), 90 degrees was turning the p...
Find all tables containing column with specified name - MS SQL Server
...N sys.tables t ON c.object_id = t.object_id
WHERE c.name LIKE '%MyName%'
ORDER BY TableName
,ColumnName;
Search Tables & Views:
SELECT COLUMN_NAME AS 'ColumnName'
,TABLE_NAME AS 'TableName'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE COL...
What guidelines for HTML email design are there? [closed]
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It's actually really hard to make a decent HTML email, if you approach it from a 'modern HTML and CSS' perspective.
For best results, imagine it's 1999.
Go back to tables for layout (or preferably - don't attempt any complex layout)
Be afraid of backgr...