Added structure directory and improved sort by fitness

src/structure/gene.py

@@ -0,0 +1,37 @@
+def check_gene(value):
+    #Check to make sure the gene is not empty
+    assert value != "" , "Gene can not be empty"
+    return value
+
+
+class Gene:
+
+    def __init__(self, value):
+        """Initialize a gene with fitness of value None and the input value"""
+        self.fitness = None
+        self.value = check_gene(value)
+
+
+    def get_fitness(self):
+        """Return fitness of the gene"""
+        return self.fitness
+
+
+    def get_value(self):
+        """Return value of the gene"""
+        return self.value
+
+
+    def set_fitness(self, fitness):
+        """Set fitness of the gene"""
+        self.fitness = fitness
+
+
+    def set_value(self, value):
+        """Set value of the gene"""
+        self.value = value
+
+
+    def __repr__(self):
+        """Format the repr() output value"""
+        return f'[{self.value}]'