Python videos | Python Part 19 - Pandas

Posted by Andy Brown on 12 November 2021


This tutorial explains what pandas is and does, including creating dataframes, importing data into them from CSV files, Excel workbooks and SQL Server tables, indexing dataframes, showing statistics and much more besides!

See our full range of Python training resources, or test your knowledge of Python with one of our Python skills assessment tests.

This video has the following accompanying files:

File name Type Description
Example dataframe.png Image Picture of example dataframe
A - Getting started.py Python code Creating dataframes and series
B - Showing dataframe info.py Python code Showing information about dataframes
C - read and write CSV.py Python code Reading to and writing from CSV files
films.csv CSV file The CSV files created
D - read and write Excel.py Python code Reading to and writing from Excel workbooks
films.xlsx Excel workbook The Excel workbook created
E - read and write SQL Server.py Python code Reading to and writing from SQL Server tables
F - slicing and indexing.py Python code Slicing and indexing dataframes
G - Sort and filter.py Python code Sorting and filtering dataframes
H - statistics and grouping.py Python code Statistics and grouping
I - column operations.py Python code Creating new columns
J - other operations.py Python code Renaming columns
J - other operations (2).py Python code Joining or merging dataframes
Films and directors.xlsx Excel workbook Workbook containing data to join
J - other operations (3).py Python code Removing duplicate rows
K - matplotlib.py Python code Using matplotlib
Useful links.txt Text file Useful links

Click to download a zipped copy of the above files.

After watching this video, you may like to test your understanding by doing one or more of the following exercises:

Exercise Level
Read an Excel workbook into a Pandas dataframe, then perform various operations Standard

You can also download the answers to each exercise from the links above.

Making a  video bigger

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Play your video (the icons shown won't appear until you do), then click on the full screen icon which appears as shown at its bottom right-hand corner.

 

When you've finished viewing a video in full screen mode, just press the Esc key to return to normal view.

Improving the quality of a video

To improve the quality of a video, first click on the Settings icon:

Settings icon

Make sure you're playing your video so that the icons shown appear, then click on this gear icon at the bottom right-hand corner.

 

Choose to change the video quality:

Video quality

Click on Quality as shown to bring up the submenu.

 

The higher the number you choose, the better will be your video quality (but the slower the connection speed):

Connection speed

Don't choose the HD option unless you have a fast enough connection speed to support it!

 

Is your Wise Owl speaking too slowly (or too quickly)?  You can also use the Settings menu above to change your playback speed.

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