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Remove columns from dataframe where ALL values are NA
I'm having trouble with a data frame and couldn't really resolve that issue myself:
The dataframe has arbitrary properties as columns and each row represents one data set .
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Take the content of a list and append it to another list
I am trying to understand if it makes sense to take the content of a list and append it to another list.
7 Answers
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Python try…except comma vs 'as' in except
What is the difference between ',' and 'as' in except statements, eg:
5 Answers
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Replacing some characters in a string with another character
I have a string like AxxBCyyyDEFzzLMN and I want to replace all the occurrences of x , y , and z with _ .
5 Answers
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How to get the changes on a branch in Git
...it-diff does not take a list of revisions - it takes one or two revisions, and has defined the A...B syntax to mean how it's defined in the git-diff manpage. If git-diff did not explicitly define A...B, then that syntax would be invalid. Note that the git-rev-parse manpage describes A...B in the "Sp...
How do I determine which iOS SDK I have?
...), especially during betas, the best place to check which version of Xcode and related SDKs you have installed is to use "System Information".
Apple Menu > About This Mac > System Report > Software > Developer
Once there, you'll see version and build numbers for all of the major compon...
Filter git diff by type of change
... If you want to use use R (renamed files) you need to use the -M expanded it is known as --find-renames
– ccjjmartin
Aug 15 '17 at 1:18
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Generate a heatmap in MatPlotLib using a scatter data set
...ou can use numpy's histogram2d function:
import numpy as np
import numpy.random
import matplotlib.pyplot as plt
# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], xedges[-1], yedges[0], yedges[...
Why is DarkGray lighter than Gray?
... on the subject:
Perhaps most unusual of the color clashes between X11 and W3C is the
case of "Gray" and its variants. In HTML, "Gray" is specifically
reserved for the 128 triplet (50% gray). However, in X11, "gray" was
assigned to the 190 triplet (74.5%), which is close to W3C "Silver"
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NameError: global name 'xrange' is not defined in Python 3
...ror but a runtime exception instead.
If you do know what your are doing and are actively making a Python 2 codebase compatible with Python 3, you can bridge the code by adding the global name to your module as an alias for range. (Take into account that you may have to update any existing range()...