__str__ (#36)

* feat : __str__ overload

* fix : test_operations.py updated

* doc : CHANGELOG.md updated

* fix : autopep8

CHANGELOG.md

@@ -6,11 +6,13 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 ### Added
-- `equality` operator overload
+- `__eq__` overload
+- `__str__` overload
 - `gc_clamp` property
 - `single_runs` property
 ### Changed
-- `property` deleter & setter removed
+### Removed
+- `property` deleter & setter
 ## [0.1] - 2024-11-27
 ### Added
 - `MeltingTemperature` enum

opr/functions.py

@@ -50,6 +50,7 @@ def gc_clamp_calc(sequence):
         return 0
     return sequence[-5:].count('G') + sequence[-5:].count('C')
 
+
 def single_run_length(sequence, base):
     """
     Calculate the maximum consecutive occurrence of a Nucleic acid (base) in a sequence.

opr/primer.py

@@ -89,6 +89,14 @@ def __mul__(self, number):
             return Primer(self._sequence * number)
         raise OPRBaseError(PRIMER_MULTIPLICATION_ERROR)
 
+    def __str__(self):
+        """
+        Primer object string representation method.
+
+        :return: primer sequence as str
+        """
+        return self._sequence
+
     def reverse(self, inplace=False):
         """
         Reverse sequence.

tests/test_operations.py

@@ -57,3 +57,10 @@ def test_equality2():
     oprimer_1 = Primer("ATCG")
     oprimer_2 = Primer("ATCGC")
     assert oprimer_1 != oprimer_2
+
+def test_str():
+    oprimer_1 = Primer("ATCG")
+    oprimer_2 = Primer("ATCGC")
+    oprimer_concat = oprimer_1 + oprimer_2
+    assert str(oprimer_1) + str(oprimer_2) == oprimer_concat.sequence
+