zulip/templates/zerver/api/configuring-python-bindings.md

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# Configuring the Python bindings
Zulip provides a set of tools that allows interacting with its API more
easily, called the [Python bindings](https://pypi.python.org/pypi/zulip/).
One of the most notable use cases for these bindings are bots developed
using Zulip's [bot framework](/api/writing-bots).
In order to use them, you need to configure them with your API key and other
settings. There are two ways to achieve that:
- With a file called `.zuliprc`, located in your home directory.
- With
[environment variables](https://en.wikipedia.org/wiki/Environment_variable)
set up in your host machine.
A `.zuliprc` file is a plain text document that looks like this:
```
[api]
key=<api key from the web interface>
email=<your email address>
site=<your Zulip server's URI>
...
```
The keys you can use in this file (and their equivalent environment variables)
can be found in the following table:
<table class="table">
<thead>
<tr>
<th><code>.zuliprc</code> key</th>
<th>Environment variable</th>
<th>Required</th>
<th>Description</th>
</tr>
</thead>
<tr>
<td><code>key</code></td>
<td><code>ZULIP_API_KEY</code></td>
<td>Yes</td>
<td>
<a href="/api/api-keys">API key</a>, which you can get through
Zulip's web interface.
</td>
</tr>
<tr>
<td><code>email</code></td>
<td><code>ZULIP_EMAIL</code></td>
<td>Yes</td>
<td>
The email address of the user who owns the API key mentioned
above.
</td>
</tr>
<tr>
<td><code>site</code></td>
<td><code>ZULIP_SITE</code></td>
<td>No</td>
<td>
URL where your Zulip server is located.
</td>
</tr>
<tr>
<td><code>client_cert_key</code></td>
<td><code>ZULIP_CERT_KEY</code></td>
<td>No</td>
<td>
Path to the SSL/TLS private key that the binding should use to
connect to the server.
</td>
</tr>
<tr>
<td><code>client_cert</code></td>
<td><code>ZULIP_CERT</code></td>
<td>No*</td>
<td>
The public counterpart of <code>client_cert_key</code>/
<code>ZULIP_CERT_KEY</code>. <i>This setting is required if a cert
key has been set.</i>
</td>
</tr>
<tr>
<td><code>client_bundle</code></td>
<td><code>ZULIP_CERT_BUNDLE</code></td>
<td>No</td>
<td>
Path where the server's PEM-encoded certificate is located. CA
certificates are also accepted, in case those CA's have issued the
server's certificate. Defaults to the built-in CA bundle trusted
by Python.
</td>
</tr>
<tr>
<td><code>insecure</code></td>
<td><code>ZULIP_ALLOW_INSECURE</code></td>
<td>No</td>
<td>
Allows connecting to Zulip servers with an invalid SSL/TLS
certificate. Please note that enabling this will make the HTTPS
connection insecure. Defaults to <code>false</code>.
</td>
</tr>
</table>