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Python pandas Filtering out nan from a data selection of a column of strings
...N:
In [87]:
nms
Out[87]:
movie name rating
0 thg John 3
1 thg NaN 4
3 mol Graham NaN
4 lob NaN NaN
5 lob NaN NaN
[5 rows x 3 columns]
In [89]:
nms = nms.dropna(thresh=2)
In [90]:
nms[nms.name.notnull()]
Out[90]:
movie name rating
0 ...
How do I browse an old revision of a Subversion repository through the web view?
...
186
Append something like this to your repository URL:
!svn/bc/<revision_number>/
E.g.
http...
Unique combination of all elements from two (or more) vectors
...
141
this maybe what you are after
> expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 ...
cannot load such file — zlib even after using rvm pkg install zlib
I installed zlib package and ruby 1.9.3 using rvm, but whenever I try to install
gems it says
cannot load such file -- zlib
...
Why was the arguments.callee.caller property deprecated in JavaScript?
...
// This snippet will work:
function factorial(n) {
return (!(n>1))? 1 : factorial(n-1)*n;
}
[1,2,3,4,5].map(factorial);
// But this snippet will not:
[1,2,3,4,5].map(function(n) {
return (!(n>1))? 1 : /* what goes here? */ (n-1)*n;
});
To get around this, arguments.calle...
How to pass a single object[] to a params object[]
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100
A simple typecast will ensure the compiler knows what you mean in this case.
Foo((object)new ...
Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...line to your Post model, after specifying has_attached_file :image
Option 1: Validate content type
validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
-OR- another way
validates_attachment :image, content_type: { content_type: ["im...
How to catch integer(0)?
...
164
That is R's way of printing a zero length vector (an integer one), so you could test for a bei...
Why does substring slicing with index out of range work?
...Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character out...
How does Django's Meta class work?
... |
edited Feb 4 at 10:55
Moon
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answered Apr...