<｜begin▁of▁sentence｜>### Instruction:
Given a configuration instance in igraph, how can you check if a specific key 'some_configuration_key' is set within that configuration?
### Response:
from igraph import Configuration

config = Configuration.instance()
key_to_check = 'some_configuration_key'

# Determine if the configuration contains the key
does_contain = key_to_check in config

print(f'Configuration contains "{key_to_check}": {does_contain}')
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