Code Metrics in Python
Project description
Radon is a tool for Python that computes various metrics from the source code. Radon does not only compute McCabe’s complexity, but also:
raw metrics (these include SLOC, comment lines, blank lines, &c.)
Halstead metrics (all of them)
Maintainability Index (the one used in Visual Studio)
Usage
Radon can be used either from the command line or programmatically. Documentation is WIP at https://radon.readthedocs.org/.
Cyclomatic Complexity
Quick example:
$ radon cc -anc ../baker/baker.py ../baker/baker.py M 581:4 Baker.parse_args - D M 723:4 Baker.parse - D M 223:4 Baker.command - C M 796:4 Baker.apply - C M 857:4 Baker.run - C 32 blocks (classes, functions, methods) analyzed. Average complexity: B (6.15625)
Actually it’s even better: it’s got colors!
Command’s help:
$ radon cc -h Usage: /home/miki/exp/bin/radon cc [<min>] [<max>] [<show_complexity>] [<average>] [<paths>...] Analyze the given Python modules and compute Cyclomatic Complexity (CC). The output can be filtered using the *min* and *max* flags. In addition to y default, complexity score is not displayed. Options: -x --max The maximum complexity to display (default to F). -a --average If True, at the end of the analysis display the average complexity. Default to False. -s --show_complexity Whether or not to show the actual complexity score together with the A-F rank. Default to False. -n --min The minimum complexity to display (default to A). Variable arguments: *paths The modules or packages to analyze.
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