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how do you filter pandas dataframes by multiple columns
...={}
for g in ['male', 'female']:
dic[g]=defaultdict(dict)
for y in [2013, 2014]:
dic[g][y]=df[(df[Gender]==g) & (df[Year]==y)] #store the DataFrames to a dict of dict
EDIT:
A demo for your getDF:
def getDF(dic, gender, year):
return dic[gender][year]
print genDF(dic, 'male', 2014)...
catch exception that is thrown in different thread
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183
In .NET 4 and above, you can use Task<T> class instead of creating new thread. Then you ca...
Is there a JavaScript strcmp()?
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136
What about
str1.localeCompare(str2)
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Fastest way to convert an iterator to a list
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350
list(your_iterator)
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Showing data values on stacked bar chart in ggplot2
..., label = Frequency)) +
geom_bar(stat = "identity") +
geom_text(size = 3, position = position_stack(vjust = 0.5))
Also note that "position_stack() and position_fill() now stack values in the reverse order of the grouping, which makes the default stack order match the legend."
Answer valid...
Python OpenCV2 (cv2) wrapper to get image size?
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213
cv2 uses numpy for manipulating images, so the proper and best way to get the size of an image i...
PostgreSQL query to return results as a comma separated list
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edited Apr 30 at 7:02
Kaleem Ullah
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What is the difference between the $parse, $interpolate and $compile services?
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3 Answers
3
Active
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“Automatic” vs “Automatic (Delayed start)”
...gured by a registry key, according to Windows Internals and other sources (3,4).
The registry keys of interest (At least in some versions of windows) are:
HKLM\SYSTEM\CurrentControlSet\services\<service name>\DelayedAutostart will have the value 1 if delayed, 0 if not.
HKLM\SYSTEM\CurrentCo...
Swift alert view with OK and Cancel: which button tapped?
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306
If you are using iOS8, you should be using UIAlertController — UIAlertView is deprecated.
H...