What are your best tips for debugging Python?
Please don't just list a particular debugger without saying what it can actually do.
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Python debugging tips
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18 Answers
Defining useful repr() methods for your classes (so you can see what an object is) and using repr() or "%r" % (...) or "...{0!r}..".format(...) in your debug messages/logs is IMHO a key to efficient debugging.
Also, the debuggers mentioned in other answers will make use of the repr() methods.
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