From b885bb6b8f92f81fb5a367be056a8af857c8864b Mon Sep 17 00:00:00 2001
From: Bertrand Benjamin <benjamin.bertrand@opytex.org>
Date: Sun, 21 Jan 2018 12:21:13 +0300
Subject: [PATCH] Start expression API

---
 mapytex/calculus/API/expression.py | 54 ++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 mapytex/calculus/API/expression.py

diff --git a/mapytex/calculus/API/expression.py b/mapytex/calculus/API/expression.py
new file mode 100644
index 0000000..5786db1
--- /dev/null
+++ b/mapytex/calculus/API/expression.py
@@ -0,0 +1,54 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+# vim:fenc=utf-8
+#
+# Copyright © 2017 lafrite <lafrite@Poivre>
+#
+# Distributed under terms of the MIT license.
+
+"""
+Expression
+
+"""
+
+
+
+class Expression(object):
+
+    """
+    Expression class
+
+    """
+
+    def __init__(self,):
+        """
+        """
+        pass
+
+    @classmethod
+    def from_str(cls,  string):
+        """ Initiate the expression from a string
+
+        :param string: TODO
+        :returns: TODO
+
+        """
+        pass
+
+    @classmethod
+    def random(self, template, conditions = [], shuffle = False):
+        """ Initiate randomly the expression 
+
+        :param template: the template of the expression
+        :param conditions: conditions on randomly generate variable
+        :param shuffle: allowing to shuffle the tree
+        :returns: TODO
+
+        """
+        pass
+
+
+# -----------------------------
+# Reglages pour 'vim'
+# vim:set autoindent expandtab tabstop=4 shiftwidth=4:
+# cursor: 16 del