54
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12
answers
2.8K
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Should I put #! (shebang) in Python scripts, and what form should it take?
Should I put the shebang in my Python scripts? In what form? #!/usr/bin/env python or #!/usr/local/bin/py
64
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20
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2.6K
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Running shell command and capturing the output
I want to write a function that will execute a shell command and return its output as a string, no matter, is
52
votes
21
answers
380
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Why do people write #!/usr/bin/env python on the first line of a Python script?
It seems to me like the files run the same without that line.
45
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27
answers
1.4K
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Pretty printing XML in Python
What is the best way (or are the various ways) to pretty print XML in Python?
63
votes
18
answers
1.1K
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How to parse XML and count instances of a particular node attribute?
I have many rows in a database that contains XML and I'm trying to write a Python script to count instanc
50
votes
3
answers
1K
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How to implement band-pass Butterworth filter with Scipy.signal.butter
UPDATE: I found a Scipy Recipe based in this question! So, for anyone interested, go straight to: Contents ยป
47
votes
4
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2.3K
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shuffle vs permute numpy
What is the difference between numpy.random.shuffle(x) and numpy.random.permutation(x)? I have read the doc p
56
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4
answers
1.2K
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MatPlotLib: Multiple datasets on the same scatter plot
I want to plot multiple data sets on the same scatter plot: cases = scatter(x[:4], y[:4], s=10, c='b&apo
63
votes
9
answers
522
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ImportError: cannot import name NUMPY_MKL
I am trying to run the following simple code import scipy scipy.test() But I am getting the following erro
58
votes
9
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2.3K
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Quantile-Quantile Plot using SciPy
How would you create a qq-plot using Python? Assuming that you have a large set of measurements and are using
55
votes
2
answers
2.6K
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Two-sample Kolmogorov-Smirnov Test in Python Scipy
I can't figure out how to do a Two-sample KS test in Scipy. After reading the documentation scipy kstest
58
votes
4
answers
2.7K
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How to transform numpy.matrix or array to scipy sparse matrix
For SciPy sparse matrix, one can use todense() or toarray() to transform to NumPy matrix or array. What are th
62
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13
answers
1.2K
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ImportError: No module named scipy
I am using Python 2.7 and trying to get PyBrain to work. But I get this error even though scipy is installed
69
votes
12
answers
2.1K
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scipy: savefig without frames, axes, only content
In numpy/scipy I have an image stored in an array. I can display it, I want to save it using savefig without a
63
votes
9
answers
631
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How to calculate probability in a normal distribution given mean & standard deviation?
How to calculate probability in normal distribution given mean, std in Python? I can always explicitly code my
52
votes
7
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655
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Plotting a fast Fourier transform in Python
I have access to NumPy and SciPy and want to create a simple FFT of a data set. I have two lists, one that is
65
votes
11
answers
1.5K
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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy alr
48
votes
7
answers
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Histogram Matplotlib
So I have a little problem. I have a data set in scipy that is already in the histogram format, so I have the
55
votes
1
answers
345
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How can I perform two-dimensional interpolation using scipy?
This Q&A is intended as a canonical(-ish) concerning two-dimensional (and multi-dimensional) interpolatio
56
votes
8
answers
787
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How to calculate cumulative normal distribution?
I am looking for a function in Numpy or Scipy (or any rigorous Python library) that will give me the cumulativ