This example illustrates how to implement a driver and package it so that it can be installed by the extension installer. The fileparse driver reads data from a file of name=value pairs.

Installation instructions using the installer (recommended)

Install the extension.

For pip installs:

 weectl extension install ~/weewx-data/examples/fileparse

For package installs

 sudo weectl extension install /usr/share/doc/weewx/examples/fileparse

Select the driver.

For pip installs:

 weectl station reconfigure

For package installs:

 sudo weectl station reconfigure

Restart WeeWX
```
 sudo systemctl restart weewx
```

Manual installation instructions

Copy the fileparse driver to the WeeWX user directory.

For pip installs:

 cd ~/weewx-data/examples/fileparse
 cp bin/user/fileparse.py ~/etc/weewx-data/bin/user

For package installs:

 cd /usr/share/doc/weewx/examples/fileparse
 sudo cp bin/user/fileparse.py /usr/share/weewx/user

Add a new [FileParse] stanza to the WeeWX configuration file

[FileParse]
    poll_interval = 10
    path = /var/tmp/datafile
    driver = user.fileparse

If the variables in the file have names different from those in the database schema, then add a mapping section called label_map. This will map the variables in the file to variables in the database columns. For example:
```
[FileParse]

    ... (as before)

    [[label_map]]
        temp = outTemp
        humi = outHumidity
        in_temp = inTemp
        in_humid = inHumidity
```
In the WeeWX configuration file, modify the station_type setting to use the fileparse driver
```
[Station]
    ...
    station_type = FileParse
```
Restart WeeWX
```
 sudo systemctl restart weewx
```