ajout script d'export de données vers CSV

permet l'applatissement du JSON. close #1

LittleBock/export.py

@@ -0,0 +1,61 @@
+#!/usr/bin/python3
+"""
+exportation de données iSpindel JSON vers données CSV
+"""
+import json, pathlib, csv
+
+class Frame(object):
+    """"""
+
+    def __init__(self,fname):
+        """"""
+        with open(fname,'r') as f:
+            self._json = json.load(f)
+        self.names = tuple(self._names())
+        self.keys = tuple(self._keys())
+        self.rows = tuple(self._rows())
+    
+    def _names(self):
+        """"""
+        for group in self._json:
+            yield group["name"]
+    
+    def _keys(self):
+        """"""
+        for i in self._json[0]["data"]:
+            yield i["x"]
+    
+    def _rows(self):
+        """"""
+        
+        def row(key):
+            """"""
+            for name in self.names:
+                yield self.get(name,key)
+        
+        for k in self.keys:
+            yield tuple(row(k))
+    
+    def get(self,name,key):
+        """"""
+        for group in self._json:
+            if group["name"] == name:
+                for value in group["data"]:
+                    if value.get("x") == key:
+                        return value.get("y")
+
+if __name__ == "__main__":
+    here = pathlib.Path.cwd()
+    docs = tuple(here.rglob("2.json"))
+    if len(docs) == 0:
+        print("Aucun fichier JSON ('.json') trouvé.")
+    for doc in docs:
+        frame = None
+        if doc.exists() and doc.stat().st_size > 0:
+            frame = Frame(doc)
+            with open(doc.with_suffix(".csv"),'w', newline='') as f:
+                writer = csv.writer(f,dialect='unix')
+                writer.writerow(frame.names)
+                writer.writerows(frame.rows)
+    
+