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how do you filter pandas dataframes by multiple columns

... sub-statements with (): males = df[(df[Gender]=='Male') & (df[Year]==2014)] To store your dataframes in a dict using a for loop: from collections import defaultdict dic={} for g in ['male', 'female']: dic[g]=defaultdict(dict) for y in [2013, 2014]: dic[g][y]=df[(df[Gender]==g) &...
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How can I use a local image as the base image with a dockerfile?

... jpetazzojpetazzo 12.2k22 gold badges3737 silver badges4343 bronze badges ...
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In jQuery, how do I get the value of a radio button when they all have the same name?

... 226 In your code, jQuery just looks for the first instance of an input with name q12_3, which in t...
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Are default enum values in C the same for all compilers?

...n below, do all C compilers set the default values as x=0 , y=1 , and z=2 on both Linux and Windows systems? 4 Answers ...
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How to use jQuery in chrome extension?

... 128 You have to add your jquery script to your chrome-extension project and to the background secti...
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How to declare and add items to an array in Python?

...y_list = list() To add elements to the list, use append my_list.append(12) To extend the list to include the elements from another list use extend my_list.extend([1,2,3,4]) my_list --> [12,1,2,3,4] To remove an element from a list use remove my_list.remove(2) Dictionaries represent a c...
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CSS I want a div to be on top of everything

... 122 In order for z-index to work, you'll need to give the element a position:absolute or a position...
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passing several arguments to FUN of lapply (and others *apply)

... 122 If you look up the help page, one of the arguments to lapply is the mysterious .... When we loo...
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I want to copy table contained from one database and insert onto another database table

... 218 If you want to copy a table from one Database to another database , You can simply do as below...
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How do you increase the max number of concurrent connections in Apache?

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