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Data Science with SQL Server Quick Start Guide

You're reading from   Data Science with SQL Server Quick Start Guide Integrate SQL Server with data science

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789537123
Length 206 pages
Edition 1st Edition
Languages
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Author (1):
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Dejan Sarka Dejan Sarka
Author Profile Icon Dejan Sarka
Dejan Sarka
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Table of Contents (10) Chapters Close

Preface 1. Writing Queries with T-SQL FREE CHAPTER 2. Introducing R 3. Getting Familiar with Python 4. Data Overview 5. Data Preparation 6. Intermediate Statistics and Graphs 7. Unsupervised Machine Learning 8. Supervised Machine Learning 9. Other Books You May Enjoy

Writing your first python code

Let me start with commenting your code. Use the hash mark for a comment the same way you use it in R. In Visual Studio, you use the Ctrl and Enter keys to execute a line of code where the cursor is, or to execute a marked block of code. I will start with the print() command to print some strings. Both single and double apostrophes are string delimiters. Here is the first Python code:

# This is a comment
print("Hello World!")
# This line is ignored - it is a comment again
print('Another string.')
print('O"Brien') # In-line comment
print("O'Brien")

When you execute the code, the Python Interactive window opens (if it is not open yet), located by default below the Script window, at the bottom of the screen. This is again very similar to R, to the R console window.

You can combine multiple strings...

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