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LATCH PYTHON SDK

#### PREREQUISITES ####

USING THE SDK IN PYTHON

  • Install "latch-sdk-telefonica"
	pip install latch-sdk-telefonica
  • Import "latch" module.
	import latch
  • Create a Latch object with the "Application ID" and "Secret" previously obtained.
	api = latch.Latch("APP_ID_HERE", "SECRET_KEY_HERE")
  • Optional settings:
	latch.Latch.set_proxy("PROXY_HOST_HERE", port)
  • Call to Latch Server. Pairing will return an account id that you should store for future api calls
	response = api.pair("PAIRING_CODE_HERE")
	response = api.status("ACCOUNT_ID_HERE")
	response = api.unpair("ACCOUNT_ID_HERE")
  • After every API call, get Latch response data and errors and handle them.
	responseData = response.get_data()
	responseError = response.get_error()

USING PYTHON SDK FOR WEB3 SERVICES

For using the Python SDK within an Web3 service, you must complain with the following:

  • It is necessary to have a developer subscription that allows you to create web3 apps.
  • You need metamask extension for Google Chrome Download metamask
  • You need a wallet to operate on Polygon. You can easily create one through Metamask.

Creation of a WEB3 Latch app

Once you have your developer Latch account created, you must logging in the website.

Steps to add new web3 app in latch-website

We add a new method to pair the web3 applications, now we have two new parameters. The two additional parameters are:

  • WEB3WALLET: The Ethereum-based address wallet for the user that wants to pair the service.
  • WEB3SIGNATURE: A proof-of-ownership signature of a constant, in order to verify that the user owns the private key of the wallet. You can use https://etherscan.io/verifiedSignatures# to sign the following message:
    • MESSAGE TO SIGN : "Latch-Web3"
  • Call to Latch Server for pairing as usual, but with the newly methods:
    api = latch.Latch(APP_ID, SECRET_KEY)
    # PAIR
    response = api.pair(pairing_code, WEB3WALLET, WEB3SIGNATURE)

You have an example of use in the file example for web3 app

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