{"library":"radon","title":"Radon","description":"Radon is a Python tool that computes various metrics from the source code, including McCabe's cyclomatic complexity, raw metrics (SLOC, comment lines, blank lines), Halstead metrics, and the Maintainability Index. It can be used via the command line or programmatically through its API. The current version is 6.0.1, released in March 2023, and it maintains a consistent release cycle with several minor and patch updates annually.","language":"python","status":"active","last_verified":"Wed May 20","install":{"commands":["pip install radon","pip install radon[toml]","pip install nbformat"],"cli":{"name":"radon","version":"6.0.1"}},"imports":["from radon.complexity import cc_visit","from radon.metrics import mi_visit","from radon.raw import analyze","from radon.halstead import h_visit"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"from radon.complexity import cc_visit\n\ndef my_complex_function(x, y):\n    if x > 0 and y < 10:\n        return x * y\n    elif x < 0 or y > 20:\n        return x + y\n    else:\n        return 0\n\ncode = \"\"\"\ndef example_function(a, b):\n    if a > 0:\n        if b < 0:\n            return a - b\n        else:\n            return a + b\n    else:\n        return 0\n\"\"\"\n\n# Analyze a string of code\ncomplexity_blocks = cc_visit(code)\nfor block in complexity_blocks:\n    print(f\"Function: {block.name}, Complexity: {block.real_cc}, Rank: {block.rank}\")\n\n# Or analyze a function object directly (Radon works on AST nodes, so you'd typically parse a file or string first)\n# For a direct function object like my_complex_function, you would need to parse its source:\nimport inspect\nfunction_code = inspect.getsource(my_complex_function)\ncomplexity_for_func_obj = cc_visit(function_code)\nfor block in complexity_for_func_obj:\n    print(f\"Function: {block.name}, Complexity: {block.real_cc}, Rank: {block.rank}\")","lang":"python","description":"This quickstart demonstrates how to use `radon.complexity.cc_visit` to programmatically analyze Python code for cyclomatic complexity. 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