### Install urllib3-sigv4 with pip

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Use pip to install the package. This is the standard method for installing Python packages.

```bash
pip install urllib3_sigv4
```

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

### Install urllib3-sigv4 with uv

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Use uv, a fast Python package installer, to add the package to your project.

```bash
uv add urllib3_sigv4
```

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

### Create a SigV4RequestSigner instance

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Instantiate SigV4RequestSigner with the AWS service name. Optional parameters like region, access_key, and secret_key can be provided or will be inferred from the environment via Boto3.

```python
from urllib3_sigv4 import SigV4RequestSigner

signer = SigV4RequestSigner(
    "lambda",
    region="eu-central-1",
    access_key="AKIAIOSFODNN7EXAMPLE",
    secret_key="wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY"
)
```

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

### Make signed requests using top-level request function

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Utilize the convenience top-level request function, which uses a module-global PoolManager instance, to make signed requests by passing a SigV4RequestSigner.

```python
from urllib3_sigv4 import SigV4RequestSigner, request

signer = SigV4RequestSigner("lambda")

response = request(
    "POST",
    "https://my-lambda-url-id.lambda-url.eu-central-1.on.aws",
    json={"name": "John Doe", "age": 30},
    signer=signer
)
print(response.json())
```

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

### Make signed requests using PoolManager

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Create a PoolManager instance with a SigV4RequestSigner to automatically sign requests. This is useful for making repeated signed requests to an AWS service.

```python
from urllib3_sigv4 import PoolManager, SigV4RequestSigner

signer = SigV4RequestSigner("lambda")
http = PoolManager(signer=signer)

response = http.request(
    "POST",
    "https://my-lambda-url-id.lambda-url.eu-central-1.on.aws",
    json={"name": "John Doe", "age": 30}
)
print(response.json())
```

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

### Override default signer in request method

Source: https://github.com/tlinhart/urllib3-sigv4/blob/main/README.md

Provide a SigV4RequestSigner instance directly to the http.request method to sign specific requests, overriding any default signer configured in the PoolManager.

```python
from urllib3_sigv4 import PoolManager, SigV4RequestSigner

signer = SigV4RequestSigner("lambda")
http = PoolManager()

# The same as when using urllib3's PoolManager.
response = http.request("GET", "https://httpbin.org/get")
print(response.json())

# This request will be signed.
response = http.request(
    "POST",
    "https://my-lambda-url-id.lambda-url.eu-central-1.on.aws",
    json={"name": "John Doe", "age": 30},
    signer=signer
)
print(response.json())
```

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