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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)...
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Why do all browsers' user agents start with “Mozilla/”?

... summary: Mozilla browser gets released, with User-Agent Mozilla/1.0 (Win3.1). It is publicly renamed to Netscape, but in its User-Agent it keeps its original name . Internet Explorer is released. It spoofs Netscape by starting its User-Agent with Mozilla/ because web servers were routinely browse...
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Why does the lock object have to be static?

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Determine distance from the top of a div to top of window with javascript

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Getting pids from ps -ef |grep keyword

... 234 You can use pgrep as long as you include the -f options. That makes pgrep match keywords in the...
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Android preferences onclick event

... 230 Badr, You need to set android:key for the item, Then in your code you can do... Assuming you...
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How do you git show untracked files that do not exist in .gitignore

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JVM option -Xss - What does it do exactly?

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Django gives Bad Request (400) when DEBUG = False

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Convert String to Uri

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