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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
... and I want to add two new columns to a dataframe df with n columns (n > 0).
These new columns result from the application of a function to one of the columns in the dataframe.
...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
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209
From the python 2 manual:
CPython implementation detail: Objects of different types except ...
ValueError: numpy.dtype has the wrong size, try recompiling
...ABI backward compatibility. This happened (unintentionally) with numpy 1.4.0.
As a consequence, users that updated numpy to 1.4.0, had binary incompatibilities with all other compiled packages, that were compiled against a previous version of numpy. This requires that all packages with binary extens...
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Tom DevTom Dev
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How to center horizontally div inside parent div
...sides to automatically fit. This centers the div.
div#child {
margin: 0 auto;
}
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How can I display just a portion of an image in HTML/CSS?
Let's say I want a way to display just the the center 50x50px of an image that's 250x250px in HTML. How can I do that. Also, is there a way to do this for css:url() references?
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jQuery UI Sortable Position
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answered Jun 6 '10 at 13:31
Nick Craver♦Nick Craver
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Setting custom UITableViewCells height
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502
Your UITableViewDelegate should implement tableView:heightForRowAtIndexPath:
Objective-C
- (C...
How to express infinity in Ruby?
...y 1.8.6, 1.8.7, and 1.9.2 you have Float.infinite?.
PositiveInfinity = +1.0/0.0
=> Infinity
NegativeInfinity = -1.0/0.0
=> -Infinity
CompleteInfinity = NegativeInfinity..PositiveInfinity
=> -Infinity..Infinity
*I've verified this in Ruby 1.8.6 and 1.9.2
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How to print to console in pytest?
... that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts =======================...