csvcombine

Combines multiple CSV files into a single one by printing to standard out. A new column, "filename", is added to the combined CSV to signify the origin file of a row of data.

Usage

There are two primary ways to provide the CSV files that will be combined.

- Directory method

Place all of your CSV files into a single directory and pass it as an argument to csvcombine.py

python csvcombine.py ./fixtures/

- List files method

The paths to the files can be listed as multiple arguments

python csvcombine.py ./fixtures/accessories.csv ./fixtures/clothing.csv ./fixtures/household_cleaners.csv

Note: The methods cannot be combined. You must either include a single directory containing the relevant CSV files or each individual file path.

To save the newly combined CSV file, one should redirect the output standard output to a file. For example,

python csvcombine.py ./fixtures/accessories.csv ./fixtures/clothing.csv ./fixtures/household_cleaners.csv > combined_output.csv

Output

If we have two files, appliances.csv and furniutre.csv:

email_address	item	cost
[email protected]	blender	$500
[email protected]	microwave	$1000

item	color
chair	green
desk	brown
sofa	tan

then csvcombine will output

email_address	item	cost	color	filename
[email protected]	blender	$500		appliances.csv
[email protected]	microwave	$1000		appliances.csv
	chair		green	furniture.csv
	desk		brown	furniture.csv
	sofa		tan	furniture.csv

Developer Dependencies

• pytest
• pytest-mock