Process finished with exit code 0
A lot of new Python developers freak out when they see the "Process finished with exit code 0" message in the console output.
Don't worry, if you get a “Process finished with exit code 0” message, that means that the code ran correctly.
It's a common practice in programming to include a numeric exit code.
If a program completes successfully with no problems, then it should return the exit code of 0. A non-zero exit code indicates a failure where each numerical value represents a different error.
Why use 0 as an exit code?
It might be confusing to see that 0 represents a success because in booleans, number 0 maps to
false, and number 1 maps to
true. However, exit codes follow a different convention. Exit codes use integers to represent the error state and the default value of an integer is 0. So by default, if we don't return a value in the main function, the compiler will automatically assume that the main function returns 0.
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