further improvements

rowers/rows.py

@@ -7,6 +7,11 @@ import time
 import gzip
 import shutil
 import hashlib
+
+
+import uuid
+
+
 from django.core.exceptions import ValidationError
 
 def format_pace_tick(x,pos=None):
@@ -26,7 +31,7 @@ def format_time_tick(x,pos=None):
 def format_pace(x,pos=None):
     if isinf(x) or isnan(x):
         x=0
-        
+
     min=int(x/60)
     sec=(x-min*60.)
 
@@ -73,14 +78,14 @@ def must_be_csv(value):
     valid_extensions = ['.csv','.CSV']
     if not ext in valid_extensions:
         raise ValidationError(u'File not supported!')
-    
+
 def validate_kml(value):
     import os
     ext = os.path.splitext(value.name)[1]
     valid_extensions = ['.kml','.KML']
     if not ext in valid_extensions:
         raise ValidationError(u'File not supported!')
-    
+
 
 def handle_uploaded_image(i):
         from io import StringIO, BytesIO
@@ -92,8 +97,8 @@ def handle_uploaded_image(i):
                 image_str += chunk
 
         imagefile = BytesIO(image_str)
-        
-                
+
+
         image = Image.open(i)
 
         try:
@@ -105,7 +110,7 @@ def handle_uploaded_image(i):
         except (AttributeError, KeyError, IndexError):
                 # cases: image don't have getexif
                 exif = {'orientation':0}
-        
+
         if image.mode not in ("L", "RGB"):
                 image = image.convert("RGB")
 
@@ -128,18 +133,17 @@ def handle_uploaded_image(i):
 
         filename2 = os.path.join('static/plots/',filename)
         image.save(filename2,'JPEG')
-        
+
         return filename,filename2
-                
+
 
 def handle_uploaded_file(f):
     fname = f.name
-    timestr = time.strftime("%Y%m%d-%H%M%S")
+    timestr = uuid.uuid4().hex[:10]+'-'+time.strftime("%Y%m%d-%H%M%S")
     fname = timestr+'-'+fname
     fname2 = 'media/'+fname
     with open(fname2,'wb+') as destination:
         for chunk in f.chunks():
             destination.write(chunk)
-            
-    return fname,fname2
 
+    return fname,fname2