Add string representation and test

Author: acampove

src/dmu/stats/measurement.py

@@ -13,6 +13,20 @@ class Measurement(BaseModel):
     data         : dict[str, tuple[float, float]]
     model_config = ConfigDict(frozen=True)
     # ----------------------
+    def __repr__(self) -> str:
+        '''
+        String representation
+        '''
+        message = f'\n{"Variable":<40}{"Value":<20}{"Error":<20}\n'
+        message+= 80 * '-' + '\n'
+        for name, (value, error) in self.data.items():
+            message += f'{name:<40}{value:<20.3f}{error:<20.3f}\n'
+
+        return message
+    # ----------------------
+    def __str__(self) -> str:
+        return self.__repr__()
+    # ----------------------
     def __getitem__(self, variable : str) -> tuple[float,float]:
         '''
         Parameters

tests/stats/test_measurement.py

@@ -6,7 +6,7 @@
 
 from dmu import Measurement
 
-
+# ------------------------------------
 def test_simple():
     data = {'a' : (1., 1.), 'b' : (2., 1.)}
 
@@ -18,3 +18,14 @@ def test_simple():
 
     assert 'a'     in ms
     assert 'x' not in ms
+# ------------------------------------
+def test_print():
+    '''
+    Test string representations
+    '''
+    data = {'a' : (1., 1.), 'b' : (2., 1.)}
+
+    ms = Measurement(data=data)
+
+    ms.__repr__()
+    ms.__str__()