Refactor Internal Functions

[sepandhaghighi]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

• detect_system function renamed to _detect_digit_system
• translate_digit function renamed to _translate_digit

Any other comments?

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 0 complexity · 0 duplication

Metric	Results
Complexity	0
Duplication	0

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (e2a2bf7) to head (b9a33c9).

Additional details and impacted files

@@            Coverage Diff            @@
##               dev      #201   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          217       217           
  Branches        11        11           
=========================================
  Hits           217       217           

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