American Academy Ophthalmology Books Free Download

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american academy of ophthalmology books free download
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American Academy of Ophthalmology Criteria for Corneal and Refractive Surgery 7th Edition 2016 Medical. Eye Surgery For Dummies is your online, illustrated, how-to guide for surgery of the eyes. You will learn. For easy, on-the-go access to all the resources you need to make. Free Medical Books Online. Medical Books Free Online. Buy now.
Chapter 5  Chapter III  Chapter III  Title. This book is about a standard description of the anatomy and physiology of the eye  .Q:

How to make output a list of all unique values of 2 adjacent columns, and change column names to make the output easier to read

I have the following data frame:
X1 X2 X3 X4
1 2 5 4 6
2 4 2 3 6
3 2 1 4 3
4 6 6 5 5
5 7 5 6 7

I’d like to create a new data frame that looks like this:
X2 X3 X4
1 [2, 5] [4, 6]
2 [2, 5, 4] [3, 6]
3 [2, 1, 4] [4, 3]
4 [6, 6] [5, 5]
5 [7, 5, 6] [5, 7]

I’d like to create this output in order to use the distribution model in google visualization. I’ve tried the following:
df = df.select(df[‘X1’].distinct(),df[‘X2’].distinct(),df[‘X3’].distinct(),df[‘X4’].distinct())

But this didn’t work as I was getting:
AttributeError: ‘DataFrame’ object has no attribute ‘distinct’

A:

You can use groupby:
In [101]: df
Out[101]:
c6a93da74d

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