Update setup.py (style change)

[szb512]

Simply the starting module import into 1 line, leaving the "from" imports the same.
This pull request does not fix an issue, as none are listed for this.

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[codecov]

Codecov Report

Merging #18462 into master will increase coverage by 1.07%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master   #18462       +/-   ##
===========================================
+ Coverage   82.11%   83.19%    +1.07%     
===========================================
  Files        1955     1570      -385     
  Lines      588958   414433   -174525     
  Branches    44428    44428               
===========================================
- Hits       483632   344786   -138846     
+ Misses      95677    60002    -35675     
+ Partials     9649     9645        -4     

Impacted Files	Coverage Δ
Lib/distutils/tests/test_bdist_rpm.py	30.00% <0.00%> (-65.00%)	⬇️
Lib/distutils/command/bdist_rpm.py	7.63% <0.00%> (-56.88%)	⬇️
Lib/test/test_urllib2net.py	76.92% <0.00%> (-13.85%)	⬇️
Lib/test/test_smtpnet.py	78.57% <0.00%> (-7.15%)	⬇️
Lib/ftplib.py	63.85% <0.00%> (-6.06%)	⬇️
Lib/test/test_ftplib.py	87.11% <0.00%> (-4.72%)	⬇️
Tools/scripts/db2pickle.py	17.82% <0.00%> (-3.97%)	⬇️
Tools/scripts/pickle2db.py	16.98% <0.00%> (-3.78%)	⬇️
Lib/test/test_socket.py	71.94% <0.00%> (-3.77%)	⬇️
Lib/test/test_asyncio/test_base_events.py	91.84% <0.00%> (-3.30%)	⬇️
... and 436 more

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[tirkarthi]

Having imports in separate lines is easier to read and maintain. IMO this change is style only and doesn't provide any improvement.

[csabella]

@szb512, thank you for your interest in improving CPython. I'm going to close this as per @tirkarthi's original comment. In Python, the recommended style is to have one import per line instead of having them all on the same line.