Speed up array declaration when possible in iomodule

[shahpratham]

Description

Replaced factories.array with DNDarray in io.py
Issue/s resolved: #797

Changes proposed:

• factories.array -> dndarray.DNDarray

Type of change

enhancement

Due Diligence

• All split configurations tested
• Multiple dtypes tested in relevant functions
• Documentation updated (if needed)
• Title of PR is suitable for corresponding CHANGELOG entry

Does this change modify the behaviour of other functions? If so, which?

no

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Legend

[codecov]

Codecov Report

Merging #1089 (fe82322) into main (687dcfb) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1089   +/-   ##
=======================================
  Coverage   92.16%   92.16%           
=======================================
  Files          75       75           
  Lines       10705    10708    +3     
=======================================
+ Hits         9866     9869    +3     
  Misses        839      839           

Flag	Coverage Δ
unit	92.16% <100.00%> (+<0.01%)	⬆️

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Files Changed	Coverage Δ
heat/core/io.py	89.50% <100.00%> (+0.06%)	⬆️

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[github-actions]

Thank you for the PR!

[github-actions]

Thank you for the PR!

[ClaudiaComito]

Proposing a few small changes. Apologies for the delay @shahpratham !

[github-actions]

Thank you for the PR!

[ClaudiaComito]

Thanks a lot!