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Title: gh-149189: Modern defaults for `pprint` by hugovk · Pull Request #149190 · python/cpython · GitHub

Open Graph Title: gh-149189: Modern defaults for `pprint` by hugovk · Pull Request #149190 · python/cpython

X Title: gh-149189: Modern defaults for `pprint` by hugovk · Pull Request #149190 · python/cpython

Description: Given: from pprint import pprint config = { "database": { "host": "db.example.com", "port": 5432, "options": { "connect_timeout": 5, "pool_size": 10, "ssl": True, "sslmode": "verify-full", }, }, "logging": { "level": "INFO", "file": "/var/log/app.log", "handlers": { "console": {"enabled": True}, "file": {"rotate": True, "max_bytes": 1048576}, }, }, } print("===== expand=False =====") print() pprint(config) print() print("===== expand=True =====") print() pprint(config, expand=True) main produces: {'database': {'host': 'db.example.com', 'options': {'connect_timeout': 5, 'pool_size': 10, 'ssl': True, 'sslmode': 'verify-full'}, 'port': 5432}, 'logging': {'file': '/var/log/app.log', 'handlers': {'console': {'enabled': True}, 'file': {'max_bytes': 1048576, 'rotate': True}}, 'level': 'INFO'}} This PR produces: { 'database': { 'host': 'db.example.com', 'options': {'connect_timeout': 5, 'pool_size': 10, 'ssl': True, 'sslmode': 'verify-full'}, 'port': 5432, }, 'logging': { 'file': '/var/log/app.log', 'handlers': {'console': {'enabled': True}, 'file': {'max_bytes': 1048576, 'rotate': True}}, 'level': 'INFO', }, } Issue: gh-149189

Open Graph Description: Given: from pprint import pprint config = { "database": { "host": "db.example.com", "port": 5432, "options": { ...

X Description: Given: from pprint import pprint config = { "database": { "host": "db.example.com", "port": 5432, ...

Opengraph URL: https://github.com/python/cpython/pull/149190

X: @github

direct link

Domain: github.com

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3f04477 Default pprint to expand=True indent=4 width=88 hugovk Apr 14, 2026 https://github.com/python/cpython/pull/149190/commits/3f04477024b375f38f724767eb71822667ffc656
bc0d9da Update test results hugovk Apr 30, 2026 https://github.com/python/cpython/pull/149190/commits/bc0d9dae80b84f54c2b501aea5b20ec53490cd21
67c9eaa Note old defaults hugovk May 2, 2026 https://github.com/python/cpython/pull/149190/commits/67c9eaa0e08d9d9ec1161a4b9ec99a6cc963f045
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3c5d8f4 Remove ValueError if compact=expand=True, compact takes precendence hugovk May 3, 2026 https://github.com/python/cpython/pull/149190/commits/3c5d8f40b450f2b797d8545769de993d59f8ff90
cce0ee4 Add note about compact=False hugovk May 3, 2026 https://github.com/python/cpython/pull/149190/commits/cce0ee4641e5140c4806383aca57917b2a0b818c
cfb5a76 Remove expand option, this is now the default hugovk May 3, 2026 https://github.com/python/cpython/pull/149190/commits/cfb5a76c9277f60c4258d1fcff5a0144320da5a0
086603c Adjust tests to keep a smaller output diff hugovk May 4, 2026 https://github.com/python/cpython/pull/149190/commits/086603c05bcb05e90aaa74c9b3df4ba66cca832a
5c9c7a5 Merge branch 'main' into 3.15-pprint-defaults hugovk May 4, 2026 https://github.com/python/cpython/pull/149190/commits/5c9c7a5689b4b4b13a0f93ce90d98a97fecfaa9f
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