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by jfischer
4518 days ago
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Alex Martelli gave a nice talk called "Permission or Forgiveness" about the exception handling style recommended by OP: http://pyvideo.org/video/1338/permission-or-forgiveness-0. He has some nice insights into this issue. That being said, I think there are some situations where you want to check for problems up front (possibly in addition to exception handling). In particular, if you are parsing some data from outside the program, you may want to provide some context about what was wrong. KeyError is not very helpful to your users. |
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