from_dataframe bug fix

[sepandhaghighi]

Reference Issues/PRs

#187

What does this implement/fix? Explain your changes.

• from_dataframe method bug fixed
• Test system modified

Any other comments?

The new from_dataframe method is capable of efficiently and securely loading pandas dataframes that have been loaded from a CSV file.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.69%. Comparing base (4258f40) to head (dc2ab13).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #196      +/-   ##
==========================================
+ Coverage   98.69%   98.69%   +0.01%     
==========================================
  Files          11       11              
  Lines        1825     1828       +3     
  Branches      179      180       +1     
==========================================
+ Hits         1801     1804       +3     
  Misses          5        5              
  Partials       19       19              

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