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how to check the dtype of a column in python pandas
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127
You can access the data-type of a column with dtype:
for y in agg.columns:
if(agg[y].dtype...
Centering the pagination in bootstrap
...t;
<li><a href="?p=1" data-original-title="" title="">2</a></li>
</ul>
</div>
Bootstrap 4 has new class
<div class="text-xs-center">
<ul class="pagination">
<li><a href="?p=0" data-original-title="" title="">1&l...
What do all of Scala's symbolic operators mean?
...to look for them. Or, failing that, look at the index (presently broken on 2.9.1, but available on nightly).
Every Scala code has three automatic imports:
// Not necessarily in this order
import _root_.java.lang._ // _root_ denotes an absolute path
import _root_.scala._
import _root_.scala.Pr...
Weighted random numbers
...e items have individual weights:
1) calculate the sum of all the weights
2) pick a random number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is ...
Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
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29 Answers
29
Active
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How to create an object for a Django model with a many to many field?
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248
You cannot create m2m relations from unsaved objects. If you have the pks, try this:
sample_o...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
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2 Answers
2
Active
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How to pip install a package with min and max version range?
... install a package with both a minimum version ( pip install package>=0.2 ) and a maximum version which should never be installed (theoretical api: pip install package<0.3 ).
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