# Installation

## PyPI

`cernopendata-client` is available on PyPI. You can install it into your
personal user space by doing:

```console
$ pip install --user cernopendata-client
```

You can also install it into a new virtual environment:

```console
$ virtualenv ~/.virtualenvs/cernopendata-client
$ source ~/.virtualenvs/cernopendata-client/bin/activate
$ pip install cernopendata-client
```

If you would like to use a more performing **pycurl** library for downloading
data, please add the `[pycurl]` flavour while installing the client. Note that
you need to have [curl](https://curl.se/) and
[openssl](https://www.openssl.org/) set up on your system:

```console
$ pip install cernopendata-client[pycurl]
```

Additionally, if you would like to use the powerful **XRootD** protocol for
downloading data, please add the `[xrootd]` flavour when installing the client.
Note that you would need to have [xrootd](https://xrootd.slac.stanford.edu/) set
up on your system:

```console
$ pip install cernopendata-client[xrootd]
```

Finally, note that you can combine both flavours, if you wish to have both
capabilities:

```console
$ pip install cernopendata-client[pycurl,xrootd]
```

## Docker

If you would like to use `cernopendata-client` as a standalone Docker container,
you can pull and use the client image as follows. Note that the image contains
both `[pycurl]` and `[xrootd]` flavours:

```console
$ docker pull docker.io/cernopendata/cernopendata-client
$ docker run -i -t --rm docker.io/cernopendata/cernopendata-client --help
```