half way through cleaning up and commenting the code

rowers/rows.py

@@ -0,0 +1,73 @@
+import time
+import gzip
+import shutil
+
+from django.core.exceptions import ValidationError
+
+def format_pace_tick(x,pos=None):
+	min=int(x/60)
+	sec=int(x-min*60.)
+	sec_str=str(sec).zfill(2)
+	template='%d:%s'
+	return template % (min,sec_str)
+
+def format_time_tick(x,pos=None):
+	hour=int(x/3600)
+	min=int((x-hour*3600.)/60)
+	min_str=str(min).zfill(2)
+	template='%d:%s'
+	return template % (hour,min_str)
+
+def format_pace(x,pos=None):
+    if isinf(x) or isnan(x):
+	x=0
+	
+    min=int(x/60)
+    sec=(x-min*60.)
+
+    str1 = "{min:0>2}:{sec:0>4.1f}".format(
+	min = min,
+	sec = sec
+	)
+
+    return str1
+
+def format_time(x,pos=None):
+
+
+    min = int(x/60.)
+    sec = int(x-min*60)
+
+    str1 = "{min:0>2}:{sec:0>4.1f}".format(
+	min=min,
+	sec=sec,
+	)
+
+    return str1
+
+def validate_file_extension(value):
+  import os
+  ext = os.path.splitext(value.name)[1]
+  valid_extensions = ['.tcx','.csv','.TCX','.CSV','.fit','.FIT','.zip','.ZIP']
+  if not ext in valid_extensions:
+    raise ValidationError(u'File not supported!')
+
+def must_be_csv(value):
+    import os
+    ext = os.path.splitext(value.name)[1]
+    valid_extensions = ['.csv','.CSV']
+    if not ext in valid_extensions:
+	raise ValidationError(u'File not supported!')
+    
+
+def handle_uploaded_file(f):
+    fname = f.name
+    timestr = 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
+