SQLAlchemy and pandas for visualization

Introduction to Databases in Python

Jason Myers

Co-Author of Essential SQLAlchemy and Software Engineer

SQLAlchemy and pandas

  • DataFrame can take a SQLAlchemy ResultSet
  • Make sure to set the DataFrame columns to the ResultSet keys
Introduction to Databases in Python

DataFrame example

import pandas as pd

df = pd.DataFrame(results)

df.columns = results[0].keys()

print(df)

    sex  pop2008_sum
0     F      2105442
1     F      2087705
2     F      2037280
3     F      2012742
4     F      2014825
5     F      1991082
Introduction to Databases in Python

Graphing

  • We can graph just like we would normally
Introduction to Databases in Python

Graphing example

import matplotlib.pyplot as plt
df[10:20].plot.barh()
plt.show()

barplot.png

Introduction to Databases in Python

Let's practice!

Introduction to Databases in Python

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