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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def start(ctx):
 """ Start the API according to the config file """

    module = ctx.config.get("api", "poloniex")
    # unlockWallet
    if module == "poloniex":
        from .apis import poloniex

        poloniex.run(ctx, port=5000)
    else:
        print_message("Unkown 'api'!", "error")