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Loops in programming (Python) [closed]

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I would like to understand better about loops. In this momment, I am learning programming in Python from Codecademy (this is my first time with any kind of programming). I could not understand very well the loops, so, I would like to train more. Where may I find guided exercises and examples, please?
Thanks for helping!
I tried asking help for friends and doing the Carly's Clippers project from Codecademy, with little success...

Clarification of Classes [closed]

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I'm learning python myself, but I just don't understand Classes. I've watched multiple Youtube videos, but everyone just starts typing code without really explaining every part of it. Do you know any good documentation, or tutorials on it?

You can finish this small but effective sololearn course of python 3
https://www.sololearn.com/Course/Python/?ref=app
Or you can follow this link to specifically know more about python class
Learn more about python class

python can draw figure like this?Which package or function should be used? [closed]

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If python can visualizate data matrixs like this? I search for it, but just find in R. I want to know whether python can do this. And which package or function should be used?

Have a look at matplotlib's gallery:
http://matplotlib.org/gallery.html
Especially:
http://matplotlib.org/examples/pie_and_polar_charts/pie_demo_features.html
http://matplotlib.org/examples/pylab_examples/pie_demo2.html

Is there something similar to AnomalyDetection (R) for Python users? [closed]

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It's quite easy to detect anomalies in time series with this package (only one line of code):
res = AnomalyDetectionTs(raw_data, max_anoms=0.02, direction='both', plot=TRUE)
I was wondering whether there's something similar for Python or not. I couldn't find anything reasonably simple in statsmodel: http://statsmodels.sourceforge.net/devel/tsa.html

Thanks for your interest, we don't currently have a python version of our AnomalyDetection package, though you'd probably be able to get it going using Rpy2: http://rpy.sourceforge.net/
Best,

Could you recommend a python library or source code for reading barcodes? [closed]

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I would like some help finding a python module that can identify a barcode within a scanned document. If anyone can help me at least come closer to finding an example of this I would be greatly appreciative.

http://pypi.python.org/pypi/zbar