Simple Python closure example
12 February 2008
11:30
| 1 | >>> def counter(start=0, step=1): |
|---|---|
| 2 | ... x = [start] |
| 3 | ... def _inc(): |
| 4 | ... x[0] += step |
| 5 | ... return x[0] |
| 6 | ... return _inc |
| 7 | ... |
| 8 | >>> c = counter() |
| 9 | >>> c() |
| 10 | 1 |
| 11 | >>> c() |
| 12 | 2 |
| 13 | >>> c() |
| 14 | 3 |
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