Better doc by explicitly using __qualname__ instead of __repr__()

[leuchtum]

Description

By explicitly using the __qualname__ string of an object (introduced in PEP 3155), the documentation does not include the <...> brackets with the memory address.

Screenshots

HereVariable.assign_attrs as an example, but more methods are affected.

Screenshot documentation BEFORE changes

Screenshot documentation AFTER changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.13%. Comparing base (497061a) to head (9b8bf1c).
Report is 14 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #238      +/-   ##
==========================================
+ Coverage   88.07%   88.13%   +0.06%     
==========================================
  Files          15       15              
  Lines        3413     3440      +27     
  Branches      789      793       +4     
==========================================
+ Hits         3006     3032      +26     
- Misses        296      297       +1     
  Partials      111      111              

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[FabianHofmann]

great, thanks @leuchtum