Displaying chained exceptions stacktraces in Python 2

Tue 12 June 2018

At work we have a component not yet migrated to Python 3, and we recently had some difficulties diagnosing a problem with the MySQL connector. Because we were catching the mysql.connector.errors.Error and raising a custom exception, we were loosing the underlying stacktrace and hence couldn't troubleshoot the …

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• lang:en
• python
• backward-compatibility
• exception
• stacktrace
• mysql
• oui.sncf
• prog

Python 3 non consistent set & dict iteration gotcha

Mon 08 December 2014

Consider the following Python expression: print("".join(set("ABCDE"))) What do you think it produces ? Not necessarily "ABCDE". Right, but you would expect the result to be consistent, isn't it ? $ for i in {1..3}; do python2.7 -c 'print("".join(set("ABCDE")))'; done ACBED ACBED ACBED Great ! ... But with …

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• lang:en
• python
• dict
• security
• perl
• hash
• iteration
• gotcha
• backward-compatibility
• set
• ministat
• csvstat
• prog