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target-csv

A Singer target that writes data to CSV files.

How to use it

target-csv works together with any other Singer Tap to move data from sources like Braintree, Freshdesk and Hubspot to CSV-formatted files. It is commonly used for loading data into tools like Excel or simply storing a backup of the source data set.

Install

We will use tap-exchangeratesapi to pull currency exchange rate data from a public data set as an example.

First, make sure Python 3 is installed on your system or follow these installation instructions for Mac or Ubuntu.

It is recommended to install each Tap and Target in a separate Python virtual environment to avoid conflicting dependencies between any Taps and Targets.

 # Install tap-exchangeratesapi in its own virtualenv
python3 -m venv ~/.virtualenvs/tap-exchangeratesapi
source ~/.virtualenvs/tap-exchangeratesapi/bin/activate
pip install tap-exchangeratesapi
deactivate

# Install target-csv in its own virtualenv
python3 -m venv ~/.virtualenvs/target-csv
source ~/.virtualenvs/target-csv/bin/activate
pip install target-csv
deactivate

Run

We can now run tap-exchangeratesapi and pipe the output to target-csv.

~/.virtualenvs/tap-exchangeratesapi/bin/tap-exchangeratesapi | ~/.virtualenvs/target-csv/bin/target-csv

The data will be written to a file called exchange_rate-{timestamp}.csv in your working directory.

› cat exchange_rate-{timestamp}.csv
AUD,BGN,BRL,CAD,CHF,CNY,CZK,DKK,GBP,HKD,HRK,HUF,IDR,ILS,INR,JPY,KRW,MXN,MYR,NOK,NZD,PHP,PLN,RON,RUB,SEK,SGD,THB,TRY,ZAR,EUR,USD,date
1.3023,1.8435,3.0889,1.3109,1.0038,6.869,25.47,7.0076,0.79652,7.7614,7.0011,290.88,13317.0,3.6988,66.608,112.21,1129.4,19.694,4.4405,8.3292,1.3867,50.198,4.0632,4.2577,58.105,8.9724,1.4037,34.882,3.581,12.915,0.9426,1.0,2017-02-24T00:00:00Z

Optional Configuration

target-csv takes an optional configuration file that can be used to set formatting parameters like the delimiter - see config.sample.json for examples. To run target-csv with the configuration file, use this command:

~/.virtualenvs/tap-exchangeratesapi/bin/tap-exchangeratesapi | ~/.virtualenvs/target-csv/bin/target-csv -c my-config.json

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