The following example queries the Carbon DeFi Subgraph using Python.
1. Copy the following code snippet into a Python development environment:
Note that you must assign the value for "GRAPH_API_KEY" with your API key. This example acquires the key from an .env file. To get an API key, visit:
import requests
import os
GRAPH_API_KEY = os.environ.get("GRT_API_KEY")
# function to use requests.post to make an API call to the subgraph url
def run_query(q):
# endpoint where you are making the request
request = requests.post(f'https://gateway-arbitrum.network.thegraph.com/api/{GRAPH_API_KEY}/subgraphs/id/3oYNFcwAGk5mVtzzMTDjanoMRsZRCGk88EFRn75dLRyp'
'',
json={'query': query})
if request.status_code == 200:
return request.json()
else:
raise Exception('Query failed. return code is {}. {}'.format(request.status_code, query))
# The Graph query
query = """
{
pairs {
token0 {
symbol
}
token1 {
symbol
}
}
}
"""
result = run_query(query)
pairs = result['data']['pairs']
print(f"number of pairs from subgraph: {len(pairs)}")
print(f"first pair: {pairs[0]}")
2. Run the code!
If successful, you will see a printout of:
The number of pairs found in Carbon DeFi
The token symbols of the first pair
The printout should look like:
number of pairs from subgraph: 87
first pair: {'token0': {'symbol': 'BIAO'}, 'token1': {'symbol': 'ETH'}}
