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Combine two or more columns in a dataframe into a new column with a new name
...OP asks for a space in between the elements, not another separator (which, by the way, would be better put as the sep argument...). The other answer, posted almost 4 years prior to yours, is however perfectly answering the question.
– Cath
Mar 27 '19 at 9:12
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How do I start Mongo DB from Windows?
... 4
cd to C:\Program Files\MongoDB\Server\3.2\bin>
enter command mongod
by default, mongodb server will start at port 27017
Step 5
(optionally) download RoboMongo and follow normal setup instructions
Step 6
Start RoboMongo and create a new connection on localhost:27017
Your MongoDB i...
How to track untracked content?
... without recording the source repository for that commit. You can fix this by either making your gitlink into a proper submodule, or by removing the gitlink and replacing it with “normal” content (plain files and directories).
Turn It into a Proper Submodule
The only bit you are missing to pro...
How to compare dates in datetime fields in Postgresql?
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@Nicolai: Thanks a lot for your answer. It works by following your answer. Also thanks for the explanation.
– user2866264
Oct 20 '13 at 0:23
1
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Python: Bind an Unbound Method?
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All functions are also descriptors, so you can bind them by calling their __get__ method:
bound_handler = handler.__get__(self, MyWidget)
Here's R. Hettinger's excellent guide to descriptors.
As a self-contained example pulled from Keith's comment:
def bind(instance, func, a...
Changing the color of the axis, ticks and labels for a plot in matplotlib
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motivated by previous contributors, this is an example of three axes.
import matplotlib.pyplot as plt
x_values1=[1,2,3,4,5]
y_values1=[1,2,2,4,1]
x_values2=[-1000,-800,-600,-400,-200]
y_values2=[10,20,39,40,50]
x_values3=[150,200,2...
Remove last character of a StringBuilder?
...have to loop through a collection and make a string of each data separated by a delimiter, you always end up with an extra delimiter at the end, e.g.
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In Matplotlib, what does the argument mean in fig.add_subplot(111)?
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I think this would be best explained by the following picture:
To initialize the above, one would type:
import matplotlib.pyplot as plt
fig = plt.figure()
fig.add_subplot(221) #top left
fig.add_subplot(222) #top right
fig.add_subplot(223) #bottom left
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How to get string width on Android?
...s) method of a Paint object. You can either use the paint object supplied by a TextView or build one yourself with your desired text appearance.
Using a Textview you Can do the following:
Rect bounds = new Rect();
Paint textPaint = textView.getPaint();
textPaint.getTextBounds(text, 0, text.length...
Difference between an application server and a servlet container?
...lowchart approach is applicable here.
Platform selection is usually done by weighing specific requirements against first-hand knowledge of systems under consideration.
However the question gives no clues as to what the evaluation criteria are. Should it be open source? Is around-the-clock vendor...