some refactorings to reduce cyclomatic complexity

[jms]

moved some code to functions to reduce the cyclomatic complexity #19

[codecov-io]

Codecov Report

Merging #25 into master will increase coverage by 0.17%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #25      +/-   ##
==========================================
+ Coverage   94.37%   94.55%   +0.17%     
==========================================
  Files           5        5              
  Lines         249      257       +8     
  Branches       21       20       -1     
==========================================
+ Hits          235      243       +8     
  Misses         12       12              
  Partials        2        2

Impacted Files	Coverage Δ
noipy/main.py	92.15% <100%> (+0.85%)	⬆️
noipy/utils.py	95% <0%> (-0.24%)	⬇️
noipy/dnsupdater.py	98.43% <0%> (-0.03%)	⬇️

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[pv8]

This functions has too many parameters and still has some Cognitive Complexity.

49-51: Function `execute_ddns_update` has 9 arguments (exceeds 4 allowed). Consider refactoring. [structure]
49-73: Function `execute_ddns_update` has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring. [structure]

Maybe try a different approach here.

[pv8]

Same issues of execute_ddns_update function (line 49):

77-79: Function `process_generic` has 5 arguments (exceeds 4 allowed). Consider refactoring. [structure]

[pv8]

@jms, thanks for contributing!
I made some comments on your PR. But, although this PR did reduce code complexity in execute_update function, it ends up adding code complexity with the new functions as well.

Running codeclimate analyze noipy/:

• noipy/main.py before PR some refactorings to reduce cyclomatic complexity #25:

== noipy/main.py (2 issues) ==
37-132: Function `execute_update` has a Cognitive Complexity of 40 (exceeds 5 allowed). Consider refactoring. [structure]
37-132: Function `execute_update` has 83 lines of code (exceeds 25 allowed). Consider refactoring. [structure]

• noipy/main.py after PR some refactorings to reduce cyclomatic complexity #25:

== noipy/main.py (6 issues) ==
49-51: Function `execute_ddns_update` has 9 arguments (exceeds 4 allowed). Consider refactoring. [structure]
49-73: Function `execute_ddns_update` has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring. [structure]
77-79: Function `process_generic` has 5 arguments (exceeds 4 allowed). Consider refactoring. [structure]
96-156: Function `execute_update` has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring. [structure]
96-156: Function `execute_update` has 49 lines of code (exceeds 25 allowed). Consider refactoring. [structure]
96-156: Cyclomatic complexity is too high in function execute_update. (9) [radon]

[jms]

yes, is no good yet, i'll try a different approach and I'll update this pull request.