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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.
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jQuery UI Sortable Position
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answered Jun 6 '10 at 13:31
Nick Craver♦Nick Craver
580k125125 gold badges12551255 silver badges11351135 bronze badges
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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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IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
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answered Jun 15 '10 at 22:32
BrigBrig
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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 =======================...
How to center canvas in html5
... canvas center according to the size of the browser window. The canvas is 800x600.
And if the window gets below 800x600, it should resize as well(but that's not very important at the moment)
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What is the “main file” property when doing bower init?
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60
According to the Bower.io documentation
main
Recommended Type: String or Array of ...
How can I check whether a numpy array is empty or not?
...e a look at the .size attribute. It is defined as an integer, and is zero (0) when there are no elements in the array:
import numpy as np
a = np.array([])
if a.size == 0:
# Do something when `a` is empty
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Longest line in a file
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Using wc (GNU coreutils) 7.4:
wc -L filename
gives:
101 filename
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Depend on a branch or tag using a git URL in a package.json?
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580
From the npm docs:
git://github.com/<user>/<project>.git#<branch>
git://gith...
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