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pandas read_csv and filter columns with usecols
...mport StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],
parse_dates=["date"...
How to use jQuery in chrome extension?
...e this :
"background":
{
"scripts": ["thirdParty/jquery-2.0.3.js", "background.js"]
}
If you need jquery in a content_scripts, you have to add it in the manifest too:
"content_scripts":
[
{
"matches":["http://website*"],
"js":["thirdParty/jq...
python location on mac osx
...
63
[GCC 4.2.1 (Apple Inc. build 5646)] is the version of GCC that the Python(s) were built with, no...
Why would anyone use set instead of unordered_set?
...
3
It's ordered using std::less by default; you can override this and supply your own comparison operator. cplusplus.com/reference/set/set
...
Remove an item from array using UnderscoreJS
... arr = [{
id: 1,
name: 'a'
}, {
id: 2,
name: 'b'
}, {
id: 3,
name: 'c'
}];
//substract third
arr = _.without(arr, _.findWhere(arr, {
id: 3
}));
console.log(arr);
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></scrip...
Custom Python list sorting
... |
edited Feb 5 '15 at 17:33
Charlie
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answered Aug 7 '12 at 16:...
App Inventor 2 扩展 · App Inventor 2 中文网
...
2.1 Importing extension components
2.2 Some sample extensions to try
2.3 Building projects with extension components
2.4 Deleting extension components
2.5 Sharing projects that use extension components
2.6 Extension component repositories
2.7 Naming extension components
2.8 Updating project...
How to configure Sublime Text 2/3 to use direct Ctrl+Tab order and to create new tabs after the last
...
3 Answers
3
Active
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What is the difference between dict.items() and dict.iteritems() in Python2?
...items(). The original remains for backwards compatibility.
One of Python 3’s changes is that items() now return iterators, and a list is never fully built. The iteritems() method is also gone, since items() in Python 3 works like viewitems() in Python 2.7.
...
What's the difference between lapply and do.call?
...|
edited May 29 '12 at 15:37
answered May 29 '12 at 15:11
A...