Merge branch '445-pretty-reporting-for-rotation-and-orientation' into…

… 'development'

increased readability

Closes #445

See merge request damask/DAMASK!971

python/damask/_rotation.py

@@ -1,5 +1,6 @@
 import sys
 import copy
+import re
 import builtins
 from typing import Optional, Union, Sequence, Tuple, Literal, List, TypeVar
 
@@ -87,15 +88,26 @@ def __init__(self,
  raise TypeError('"rotation" is neither a Rotation nor a quaternion')
 
 
+ def __str__(self) -> str:
+ """
+ Return str(self).
+
+ Give short, human-readable summary.
+
+ """
+ return re.sub(r'\[(\+|-| )([^\s]+)\s*(\+|-| )([^\s]+)\s*(\+|-| )([^\s]+)\s*(\+|-| )(.+?)\]',
+ r'\1\2 \3\4 \5\6 \7\8',self.quaternion.__str__())
+
+
  def __repr__(self) -> str:
  """
  Return repr(self).
 
- Give short, human-readable summary.
+ Give unambiguous representation.
 
  """
- return f'Quaternion{" " if self.quaternion.shape == (4,) else "s of shape "+str(self.quaternion.shape[:-1])+chr(10)}'\
- + str(self.quaternion)
+ return re.sub(r'\[(\+|-| )([^,]+,)\s*(\+|-| )([^,]+,)\s*(\+|-| )([^,]+,)\s*(\+|-| )(.+?)\]',
+  r'(\1\2 \3\4 \5\6 \7\8)',self.quaternion.__repr__())
 
 
  def __copy__(self: MyType,