diff --git a/concat.py b/concat.py
new file mode 100644
index 0000000000000000000000000000000000000000..842b4fd7f986534d8b0c8e5a21ebdfc9506bb5f3
--- /dev/null
+++ b/concat.py
@@ -0,0 +1,27 @@
+class Concat:
+    """
+
+    """
+
+    def __init__(self, file):
+        """
+
+        """
+        self.file = file
+        self.sequence = None
+
+    def get_sequence(self):
+        """
+
+        :return:
+        """
+        with open(self.file, "r") as fichier:
+            self.sequence = str(fichier.read())
+            return self.sequence
+
+    def __len__(self):
+        """
+
+        :return:
+        """
+        return len(self.sequence())