9. Development Workflow

Running the test suite, debug builds, GDB and LLDB, sanitizers, tracing memory bugs, writing core tests, documentation, making patches, reading PEPs, and the release process.

10 items

Chapter Title
82 Running the Test Suite
83 Debug Builds
84 GDB and LLDB
85 Sanitizers
86 Tracing Memory Bugs
87 Writing Core Tests
88 Documentation Workflow
89 Making a CPython Patch
90 Reading PEPs
91 Release Process
Deep Reads › CPython Internals › 9. Development Workflow ›

82. Running the Test Suite

python -m test flags, regrtest test selection, parallel execution (-j), and interpreting test output.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

83. Debug Builds

Py_DEBUG compile flag, assertion macros, the --with-pydebug configure option, and debugging allocator.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

84. GDB and LLDB

CPython-aware GDB and LLDB scripts in Tools/gdb/, py-bt, py-list, and inspecting live interpreter frames.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

85. Sanitizers

Building CPython with AddressSanitizer, UBSan, and ThreadSanitizer to catch memory and concurrency bugs.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

86. Tracing Memory Bugs

Valgrind suppression files, tracemalloc snapshot diffing, and libasan leak detection in CPython builds.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

87. Writing Core Tests

test_* module conventions, unittest patterns, support helpers in Lib/test/support/, and writing C-level tests.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

88. Documentation Workflow

Doc/ Sphinx source layout, building docs with make html, and the process for submitting documentation fixes.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

89. Making a CPython Patch

GitHub workflow: forking, branching, opening a PR, responding to review, and the CLA requirement.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

90. Reading PEPs

PEP document structure, the steering council review process, and tracking PEP status on peps.python.org.
cpython python internals development
Deep Reads › CPython Internals › 9. Development Workflow ›

91. Release Process

CPython version numbering, alpha/beta/RC schedule, branch management, and the role of the release manager.
cpython python internals development