### Install Dwolla Python SDK

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Install the Dwolla Python SDK using pip. This is the first step to begin using the SDK.

```shell
pip install dwollav2
```

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

### Perform GET Request

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Make a GET request to a specified resource. Supports query parameters as keyword arguments or a dictionary.

```python
# GET api.dwolla.com/resource?foo=bar
token.get('resource', foo = 'bar')
```

```python
# GET api.dwolla.com/resource?foo=bar
token.get('resource', {'foo' = 'bar', 'baz' = 'foo'})
```

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

### Initialize Dwolla Client with Environment and Timeout

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Initialize the Dwolla Client with your application key, secret, and environment. Optionally configure request timeout.

```python
client = dwollav2.Client(
  key = os.environ['DWOLLA_APP_KEY'],
  secret = os.environ['DWOLLA_APP_SECRET'],
  environment = 'sandbox', # defaults to 'production'
  requests = {'timeout': 0.001}
)
```

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

### Initialize Dwolla Client with on_grant Callback

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Initialize the Dwolla Client and configure an optional on_grant callback to handle new token grants.

```python
client = dwollav2.Client(
  key = os.environ['DWOLLA_APP_KEY'],
  secret = os.environ['DWOLLA_APP_SECRET'],
  on_grant = lambda t: save(t)
)
```

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

### Initialize Pre-Existing Token

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Initialize a Token object with an existing access token and its expiration time.

```python
client.Token(access_token = '...', 
             expires_in = 123)
```

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

### Perform POST Request with JSON Data

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Make a POST request to a specified resource with JSON data. Parameters are sent as keyword arguments.

```python
# POST api.dwolla.com/resource {"foo":"bar"}
token.post('resource', foo = 'bar')
```

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

### Perform POST Request with Multipart Form Data

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Make a POST request with multipart/form-data, suitable for file uploads. Specify filename, file object, and content type.

```python
# POST api.dwolla.com/resource multipart/form-data foo=...
token.post('resource', foo = ('mclovin.jpg', open('mclovin.jpg', 'rb'), 'image/jpeg'))
```

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

### Handling Dwolla API Errors

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Demonstrates how to catch and handle specific Dwolla API errors, such as NotFoundError, using a try-except block. It shows how to access error details like status, headers, and the error code from the exception object.

```python
try:
  token.get('/not-found')
except dwollav2.NotFoundError as e:
  e.status
  # => 404

  e.headers
  # => {"server"=>"cloudflare-nginx", "date"=>"Mon, 28 Mar 2016 15:35:32 GMT", "content-type"=>"application/vnd.dwolla.v1.hal+json; profile=\"http://nocarrier.co.uk/profiles/vnd.error/\"; charset=UTF-8", "content-length"=>"69", "connection"=>"close", "set-cookie"=>"__cfduid=da1478bfdf3e56275cd8a6a741866ccce1459179332; expires=Tue, 28-Mar-17 15:35:32 GMT; path=/; domain=.dwolla.com; HttpOnly", "access-control-allow-origin"=>"*", "x-request-id"=>"667fca74-b53d-43db-bddd-50426a011881", "cf-ray"=>"28ac270abca64207-MSP"}

  e.body.code
  # => "NotFound"
except dwollav2.Error:
  # ...
```

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

### Set Request Headers for POST Request

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Set additional headers, such as 'Idempotency-Key', for a POST request by passing a dictionary as the third argument.

```python
token.post('customers', { 'firstName': 'John', 'lastName': 'Doe', 'email': 'jd@doe.com' },
                        { 'Idempotency-Key': 'a52fcf63-0730-41c3-96e8-7147b5d1fb01' })
```

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

### Generate Application Access Token

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Generate an application access token using the client credentials grant type. This token is used for authenticating API requests on behalf of the application.

```python
application_token = client.Auth.client()
```

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

### Perform DELETE Request

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Make a DELETE request to a specified resource.

```python
# DELETE api.dwolla.com/resource
token.delete('resource')
```

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

### Handle Successful API Response

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

Access the status code and headers from a successful API response object.

```python
res = token.get('/')

res.status
# => 200

res.headers
```

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

### Accessing Event Href

Source: https://github.com/dwolla/dwolla-v2-python/blob/main/README.md

This snippet shows how to access the 'href' attribute from the 'events' link in a Dwolla API response body.

```python
res.body['_links']['events']['href']
# => 'https://api-sandbox.dwolla.com/events'
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.