Python Specials #12 Single-Server Queueing System Simulation

This code defines a SingleServerQueue class which represents the server in the queueing system. The server has a capacity of 1 and is represented by a simpy.Resource object. The service time is passed in as a parameter to the constructor.

The customer_arrivals function generates customer arrivals using an exponential distribution with a mean of 5. For each arrival, a new customer process is started using the customer function.

The customer function requests access to the server resource, waits until it is available, then serves the customer for a random amount of time using an exponential distribution with a mean equal to the service time. After being served, the customer leaves the queueing system.

The simulation is started by creating a simpy.Environment object and calling customer_arrivals as a process. The simulation runs until SIM_TIME (in this case, 1000). During the simulation, the arrival and departure of each customer are printed to the console.

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