find_free_port Documentation for eth_defi.utils.find_free_port function. find_free_port(min_port=20000, max_port=40000, max_attempt=20)[source] Find a free localhost port to bind. Does by random. Note Subject to race condition, but should be rareish. Parameters min_port (int) – Minimum port range max_port (int) – Maximum port range max_attempt (int) – Give up and die with an exception if no port found after this many attempts. Returns Free port number Return type int