add check for file version

Author: danielparthier

neo/rawio/winwcprawio.py

@@ -62,6 +62,7 @@ def _parse_header(self):
                     continue
                 key, val = line.split("=")
                 if key in [
+                    "VER",
                     "NC",
                     "NR",
                     "NBH",
@@ -81,7 +82,12 @@ def _parse_header(self):
                 header[key] = val
 
             nb_segment = header["NR"]
-            rec_datetime = datetime.datetime.strptime(header["RTIME"], "%d/%m/%Y %H:%M:%S")
+
+            # get rec_datetime when WCP data file version is later than 8
+            if header["VER"] > 8:
+                rec_datetime = datetime.datetime.strptime(header["RTIME"], "%d/%m/%Y %H:%M:%S")
+            else:
+                rec_datetime = None
             all_sampling_interval = []
             # loop for record number
             for seg_index in range(header["NR"]):