### Install etcd3-gateway in a virtual environment

Source: https://github.com/openstack/etcd3gw/blob/master/doc/source/installation.md

Installation commands for users utilizing virtualenvwrapper.

```default
$ mkvirtualenv etcd3-gateway
$ pip install etcd3-gateway
```

--------------------------------

### Install etcd3-gateway via pip

Source: https://github.com/openstack/etcd3gw/blob/master/doc/source/installation.md

Standard installation command for the etcd3-gateway package.

```default
$ pip install etcd3-gateway
```

--------------------------------

### Perform basic etcd operations with etcd3gw

Source: https://github.com/openstack/etcd3gw/blob/master/doc/source/usage.md

Demonstrates connecting to an etcd server, performing CRUD operations on keys, managing leases, and setting up watches.

```python
from etcd3gw.client import Etcd3Client

client = Etcd3Client(host='localhost', port=2379)

# Put key
client.put(key='foo', value='bar')

# Get key
client.get(key='foo')

# Get all keys
client.get_all()


# Create lease and use it
lease = client.lease(ttl=100)

client.put(key='foo', value='bar', lease=lease)

# Get lease keys
lease.keys()

# Refresh lease
lease.refresh()


# Use watch
watcher, watch_cancel = client.watch(key='KEY')

for event in watcher: # blocks until event comes, cancel via watch_cancel()
    print(event)
    # modify event: {'kv': {'mod_revision': '8', 'version': '3', 'value': 'NEW_VAL', 'create_revision': '2', 'key': 'KEY', 'lease': '7587847878767953426'}}
```

--------------------------------

### etcd3gw Modules Overview

Source: https://github.com/openstack/etcd3gw/blob/master/doc/source/api/autoindex.md

A summary of the primary modules provided by the etcd3gw library for interacting with etcd v3.

```APIDOC
## etcd3gw Modules

### Description
The etcd3gw library is organized into several key modules to handle different aspects of etcd v3 interactions.

### Modules
- **etcd3gw.client**: Provides the primary client interface for connecting to and interacting with the etcd server.
- **etcd3gw.lease**: Contains functionality for managing etcd leases, which are used for TTL-based key expiration.
- **etcd3gw.lock**: Implements distributed locking mechanisms using etcd primitives.
- **etcd3gw.utils**: Includes various helper functions and utilities used across the library.
```

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