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Add singleton escape hatch to B008 documentation #8501

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merged 1 commit into from
Nov 7, 2023
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@charliermarsh charliermarsh commented Nov 6, 2023

Summary:

Closes: #8378.

@charliermarsh charliermarsh added the documentation Improvements or additions to documentation label Nov 6, 2023
} else {
format!("Do not perform function call in argument defaults")
format!("Do not perform function call in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable")
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I'm not a huge fan of bugbear's error messages which tend to be very long (https://github.com/PyCQA/flake8-bugbear/blob/907e0dd29a99818591a604d4557c70ea33204712/bugbear.py#L1660-L1667). I prefer to put that level of detail in our documentation, or make it evident via the proposed fix. But I do think this one can be a bit clearer. Wdyt @zanieb?

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github-actions bot commented Nov 6, 2023

ruff-ecosystem results

Linter (stable)

ℹ️ ecosystem check detected linter changes. (+93 -93 violations, +0 -0 fixes in 41 projects)

apache/airflow (+16 -16 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL

- airflow/metrics/datadog_logger.py:49:44: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/datadog_logger.py:49:44: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/datadog_logger.py:51:48: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/datadog_logger.py:51:48: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/otel_logger.py:169:30: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/otel_logger.py:169:30: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/statsd_logger.py:72:44: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/statsd_logger.py:72:44: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/statsd_logger.py:74:48: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/statsd_logger.py:74:48: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
... 22 additional changes omitted for project

bokeh/bokeh (+1 -1 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL

- src/bokeh/server/tornado.py:274:48: B008 Do not perform function call `NullAuth` in argument defaults
+ src/bokeh/server/tornado.py:274:48: B008 Do not perform function call `NullAuth` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable

latchbio/latch (+1 -1 violations, +0 -0 fixes)

- latch/verified/pathway.py:17:33: B008 Do not perform function call `LatchDir` in argument defaults
+ latch/verified/pathway.py:17:33: B008 Do not perform function call `LatchDir` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable

zulip/zulip (+75 -75 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL

- analytics/views/stats.py:254:33: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/stats.py:254:33: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- analytics/views/stats.py:255:31: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/stats.py:255:31: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- analytics/views/support.py:165:35: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/support.py:165:35: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- confirmation/models.py:118:67: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ confirmation/models.py:118:67: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/actions/invites.py:54:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ zerver/actions/invites.py:54:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/models.py:2526:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ zerver/models.py:2526:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tests/test_has_request_variables.py:138:61: B008 Do not perform function call `REQ` in argument defaults
+ zerver/tests/test_has_request_variables.py:138:61: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tests/test_typed_endpoint.py:87:39: B008 Do not perform function call `Foo` in argument defaults
+ zerver/tests/test_typed_endpoint.py:87:39: B008 Do not perform function call `Foo` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tornado/views.py:114:37: B008 Do not perform function call `REQ` in argument defaults
+ zerver/tornado/views.py:114:37: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:154:36: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:154:36: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:209:36: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:209:36: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:259:24: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:259:24: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:259:43: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:259:43: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:270:23: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:270:23: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:270:42: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:270:42: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:293:48: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:293:48: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:294:24: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:294:24: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:52:54: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/events_register.py:52:54: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:53:24: B008 Do not perform function call `check_dict` in argument defaults
+ zerver/views/events_register.py:53:24: B008 Do not perform function call `check_dict` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:78:23: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/events_register.py:78:23: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
... 110 additional changes omitted for project

Changes by rule (1 rules affected)

code total + violation - violation + fix - fix
B008 186 93 93 0 0

Linter (preview)

ℹ️ ecosystem check detected linter changes. (+93 -93 violations, +0 -0 fixes in 41 projects)

apache/airflow (+16 -16 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL --preview

- airflow/metrics/datadog_logger.py:49:44: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/datadog_logger.py:49:44: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/datadog_logger.py:51:48: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/datadog_logger.py:51:48: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/otel_logger.py:169:30: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/otel_logger.py:169:30: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/statsd_logger.py:72:44: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/statsd_logger.py:72:44: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- airflow/metrics/statsd_logger.py:74:48: B008 Do not perform function call `AllowListValidator` in argument defaults
+ airflow/metrics/statsd_logger.py:74:48: B008 Do not perform function call `AllowListValidator` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
... 22 additional changes omitted for project

bokeh/bokeh (+1 -1 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL --preview

- src/bokeh/server/tornado.py:274:48: B008 Do not perform function call `NullAuth` in argument defaults
+ src/bokeh/server/tornado.py:274:48: B008 Do not perform function call `NullAuth` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable

latchbio/latch (+1 -1 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --preview

- latch/verified/pathway.py:17:33: B008 Do not perform function call `LatchDir` in argument defaults
+ latch/verified/pathway.py:17:33: B008 Do not perform function call `LatchDir` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable

zulip/zulip (+75 -75 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --select ALL --preview

- analytics/views/stats.py:254:33: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/stats.py:254:33: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- analytics/views/stats.py:255:31: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/stats.py:255:31: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- analytics/views/support.py:165:35: B008 Do not perform function call `REQ` in argument defaults
+ analytics/views/support.py:165:35: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- confirmation/models.py:118:67: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ confirmation/models.py:118:67: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/actions/invites.py:54:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ zerver/actions/invites.py:54:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/models.py:2526:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults
+ zerver/models.py:2526:73: B008 Do not perform function call `UnspecifiedValue` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tests/test_has_request_variables.py:138:61: B008 Do not perform function call `REQ` in argument defaults
+ zerver/tests/test_has_request_variables.py:138:61: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tests/test_typed_endpoint.py:87:39: B008 Do not perform function call `Foo` in argument defaults
+ zerver/tests/test_typed_endpoint.py:87:39: B008 Do not perform function call `Foo` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/tornado/views.py:114:37: B008 Do not perform function call `REQ` in argument defaults
+ zerver/tornado/views.py:114:37: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:154:36: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:154:36: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:209:36: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:209:36: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:259:24: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:259:24: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:259:43: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:259:43: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:270:23: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:270:23: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:270:42: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:270:42: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:293:48: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/custom_profile_fields.py:293:48: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/custom_profile_fields.py:294:24: B008 Do not perform function call `check_list` in argument defaults
+ zerver/views/custom_profile_fields.py:294:24: B008 Do not perform function call `check_list` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:52:54: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/events_register.py:52:54: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:53:24: B008 Do not perform function call `check_dict` in argument defaults
+ zerver/views/events_register.py:53:24: B008 Do not perform function call `check_dict` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
- zerver/views/events_register.py:78:23: B008 Do not perform function call `REQ` in argument defaults
+ zerver/views/events_register.py:78:23: B008 Do not perform function call `REQ` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable
... 110 additional changes omitted for project

Changes by rule (1 rules affected)

code total + violation - violation + fix - fix
B008 186 93 93 0 0

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I'd like a shorter error message with a fix showing using the singleton

@charliermarsh charliermarsh merged commit c3d6d5d into main Nov 7, 2023
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@charliermarsh charliermarsh deleted the charlie/doc branch November 7, 2023 04:53
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B008 complains about function call when constructing a default parameter value as a exception
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