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4 - Input–Output
Michael Hammond, University of Arizona
Book:

Python for Linguists

Published online:

20 April 2020

Print publication:

07 May 2020, pp 56-80
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Summary

This chapter introduces input and output – how we get data into and out of our programs. The input modes include the command line, file input, pipes, and typed input. (A later chapter treats graphical user interface input.) The output modes include the command line, file output, and pipes.

Challenges 111–117 - Reading and Writing to a .csv File
from Part I - Learning Python
Nichola Lacey
Book:

Python by Example

Published online:

28 May 2019

Print publication:

16 May 2019, pp 91-98
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Summary

Comma Separated Value (.csv) files allow data to be stored in rows and columns that can be read by a spreadsheet. This gives the data more structure making it easier to identify. The reader completes seven challenges, including reading and writing .csv files, and removing data from a .csv file.

Challenges 139–145 - SQLite
from Part I - Learning Python
Nichola Lacey
Book:

Python by Example

Published online:

28 May 2019

Print publication:

16 May 2019, pp 134-146
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Summary

SQL databases are widely used in industry and this final chapter of Part I teaches the reader how to link to an SQL database using SQLite 3. It explains what a relational database is, the use of primary keys and it shows how to create a table, import the data into Python and run selection queries. The seven challenges allow the reader to put these new skills into practice.

Challenges 105–110 - Reading and Writing to a Text File
from Part I - Learning Python
Nichola Lacey
Book:

Python by Example

Published online:

28 May 2019

Print publication:

16 May 2019, pp 86-90
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Summary

Saving data to an external file is an essential skill allowing programs to have multiple practical real-world uses. This chapter shows the reader how to save data to text files as well as import data from text files into Python so it can be manipulated. By working through the six challenges the reader learns how to implement these important new skills.

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