fix: restore fill_value=None for zarr_format=2

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ianhi]

Should fix#3197

Without this it is not possible to write "null" to the zarr format 2 fill value.

@d-v-b

As discussed in #3197 adds a new sentinel class to indicate using the default fill value for the dtype. Which gives:

Version	Format 2	Format 3
3.0.9	null	default scalar
This PR	null	default scalar
Main	default scalar	default scalar

for a fill value input of None

Test comign once I get them to run locally (figuring out hatch)
TODO:

• Add unit tests and/or doctests in docstrings

• [NA] New/modified features documented in docs/user-guide/*.rst

• [NA] Changes documented as a new file in changes/

• GitHub Actions have all passed

• Test coverage is 100% (Codecov passes)

[d-v-b]

for posterity, we now have a type alias for the scalar types of all the dtypes which we can use instead of Any here

[d-v-b]

although maybe we should just use object, since we do want to allow inputs to be castable

[d-v-b]

thanks for this ian! In the interest of velocity I pushed some changes. I'm going to merge this as soon as all the checks pass.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.48%. Comparing base (5a24487) to head (b3b07aa).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #3198 +/- ##
=======================================
Coverage 94.48% 94.48% =======================================
Files 78 78 Lines 8606 8609 +3 =======================================
+ Hits 8131 8134 +3 
Misses 475 475 

Files with missing lines	Coverage Δ
src/zarr/api/synchronous.py	94.66% <100.00%> (ø)
src/zarr/core/array.py	98.46% <100.00%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.