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* [Ocean.py](developers/ocean.py/README.md)
* [Install](developers/ocean.py/install.md)
* [Local Setup](developers/ocean.py/local-setup.md)
* [Remote setup](developers/ocean.py/remote-setup.md)
* [Remote Setup](developers/ocean.py/remote-setup.md)
* [Publish flow](developers/ocean.py/publish-flow.md)
* [Consume flow](developers/ocean.py/consume-flow.md)
* [Technical Details](developers/ocean.py/technical-details.md)
* [Ocean.js](developers/ocean.js/README.md)
* [Configuration](developers/ocean.js/configuration.md)
* [Creating a data NFT](developers/ocean.js/creating-datanft.md)

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@ -51,10 +51,12 @@ ocean.OCEAN_token.approve(exchange.address, OCEAN_needed, {"from":bob})
exchange.buy_DT(to_wei(1), consume_market_fee=0, tx_dict={"from": bob})
```
For more info, see [Appendix: Dispenser / Faucet Details](https://github.com/oceanprotocol/ocean.py/blob/main/READMEs/main-flow.md#appendix-faucet-details) and [Exchange Details](https://github.com/oceanprotocol/ocean.py/blob/main/READMEs/main-flow.md#appendix-exchange-details).
For more info, check [Technical Details](https://app.gitbook.com/o/mTcjMqA4ylf55anucjH8/s/BTXXhmDGzR0Xgj13fyfM/\~/changes/336/developers/ocean.py/technical-details) about ocean.py most used functions and also the smart contracts for [Dispenser](https://github.com/oceanprotocol/contracts/blob/main/contracts/pools/dispenser/Dispenser.sol) & [Fixed Rate Exchange](https://github.com/oceanprotocol/contracts/blob/main/contracts/pools/fixedRate/FixedRateExchange.sol).
### Consume the asset ⬇️
To "consume" an asset typically means placing an "order", where you pass in 1.0 datatokens and get back a url. Then, you typically download the asset from the url.
Bob now has the datatoken for the dataset! Time to download the dataset and use it.
<figure><img src="../../.gitbook/assets/200w.webp" alt=""><figcaption></figcaption></figure>
@ -97,5 +99,3 @@ The _beginning_ of the file should contain the following contents:
-3.9286,0.0000,206.1783
...
```
For more info, see [Appendix: Consume Details](https://github.com/oceanprotocol/ocean.py/blob/main/READMEs/main-flow.md#appendix-consume-details).

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@ -37,4 +37,95 @@ You've now published an Ocean asset!
<figure><img src="../../.gitbook/assets/200.webp" alt=""><figcaption></figcaption></figure>
For more info, see [Appendix: Publish Details](https://github.com/oceanprotocol/ocean.py/blob/main/READMEs/main-flow.md#appendix-publish-details).
### Appendix
For more information regarding: Data NFT & Datatokens interfaces and how they are implemented in Solidity, we suggest to follow up this [article](../datanft-and-datatoken/) and [contracts repo](https://github.com/oceanprotocol/contracts) from GitHub.
As you may want to explore more the DDO specs, structure & meaning, we invite you to consult [DDO Specification](../ddo-specification.md) section.
#### Publishing Alternatives
Here's an example similar to the `create()` step above, but exposes more fine-grained control.
In the same python console:
```python
# Specify metadata and services, using the Branin test dataset
date_created = "2021-12-28T10:55:11Z"
metadata = {
"created": date_created,
"updated": date_created,
"description": "Branin dataset",
"name": "Branin dataset",
"type": "dataset",
"author": "Trent",
"license": "CC0: PublicDomain",
}
# Use "UrlFile" asset type. (There are other options)
from ocean_lib.structures.file_objects import UrlFile
url_file = UrlFile(
url="https://raw.githubusercontent.com/trentmc/branin/main/branin.arff"
)
# Publish data asset
from ocean_lib.models.datatoken_base import DatatokenArguments
_, _, ddo = ocean.assets.create(
metadata,
{"from": alice},
datatoken_args=[DatatokenArguments(files=[url_file])],
)
```
#### DDO Encryption or Compression
The DDO is stored on-chain. It's encrypted and compressed by default. Therefore it supports GDPR "right-to-be-forgotten" compliance rules by default.
You can control this during `create()`:
* To disable encryption, use `ocean.assets.create(..., encrypt_flag=False)`.
* To disable compression, use `ocean.assets.create(..., compress_flag=False)`.
* To disable both, use `ocean.assetspy.create(..., encrypt_flag=False, compress_flag=False)`.
#### Create _just_ a data NFT
Calling `create()` like above generates a data NFT, a datatoken for that NFT, and a ddo. This is the most common case. However, sometimes you may want _just_ the data NFT, e.g. if using a data NFT as a simple key-value store. Here's how:
```python
data_nft = ocean.data_nft_factory.create({"from": alice}, 'NFT1', 'NFT1')
```
If you call `create()` after this, you can pass in an argument `data_nft_address:string` and it will use that NFT rather than creating a new one.
#### Create a datatoken from a data NFT
Calling `create()` like above generates a data NFT, a datatoken for that NFT, and a ddo object. However, we may want a second datatoken. Or, we may have started with _just_ the data NFT, and want to add a datatoken to it. Here's how:
```python
datatoken = data_nft.create_datatoken({"from": alice}, "Datatoken 1", "DT1")
```
If you call `create()` after this, you can pass in an argument `deployed_datatokens:List[Datatoken1]` and it will use those datatokens during creation.
#### Create an asset & pricing schema simultaneously
Ocean Assets allows you to bundle several common scenarios as a single transaction, thus lowering gas fees.
Any of the `ocean.assets.create_<type>_asset()` functions can also take an optional parameter that describes a bundled pricing schema (Dispenser or Fixed Rate Exchange).&#x20;
Here is an example involving an exchange:
{% code overflow="wrap" %}
```python
from ocean_lib.models.fixed_rate_exchange import ExchangeArguments
(data_nft, datatoken, ddo) = ocean.assets.create_url_asset(
name,
url,
{"from": alice},
pricing_schema_args=ExchangeArguments(rate=to_wei(3), base_token_addr=ocean.OCEAN_address, dt_decimals=18)
)
assert len(datatoken.get_exchanges()) == 1
```
{% endcode %}

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description: Remote setup for running & testing ocean.py
---
# Remote setup
# Remote Setup
Here, we do setup for Mumbai, the testnet for Polygon. It's similar for other remote chains.

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# Technical Details