goto

An implementation of goto for Python 3.

Not for production use. It's a bit of fun. Some people have used it to port old goto-containing code.

Instructions

1. Copy goto.py where your code can import it.
2. Import the goto decorator from the goto module with from goto import goto
3. Identify the function you want to use goto within, and decorate it with @goto
4. Within the function, you can specify labels like so: label .found (use whatever label you want, found is just an example)
5. In the code, you can do a jump to the label with goto .found (or whatever your label is called)

Multiple gotos can target one label. Every goto must have a target label.

Usage example:

from goto import goto

@goto
def matrix_find(matrix, n):
    for rectangle in matrix:
        for line in rectangle:
            for value in line:
                if value == n:
                    rval = "found"
                    goto .found
    rval = "not found"
    label .found
    # ... other code here ...
    return rval

print(matrix_find([[[1,2]],[[3,4]]], 3))   # "found"
print(matrix_find([[[1,2]],[[3,4]]], 99))  # "not found"