small bug fixes

rowers/dataprepnodjango.py

@@ -166,7 +166,7 @@ def create_c2_stroke_data_db(
     try:
         spm = 60.*nr_strokes/totalseconds
     except ZeroDivisionError:
-        spm = 20*zeros(nr_strokes)
+        spm = 20*np.zeros(nr_strokes)
 
     step = totalseconds/float(nr_strokes)
 
@@ -713,7 +713,7 @@ def getsmallrowdata_db(columns,ids=[],debug=False):
     columns = [c for c in columns if c != 'None']
 
     if len(ids)>1:
-        for f in csvfilenames:
+        for id, f in zip(ids,csvfilenames):
             try:
                 df = pd.read_parquet(f,columns=columns,engine='pyarrow')
                 data.append(df)
@@ -721,7 +721,10 @@ def getsmallrowdata_db(columns,ids=[],debug=False):
                 pass
 
 
+        try:
             df =  pd.concat(data,axis=0)
+        except ValueError:
+            df = pd.DataFrame()
     else:
         df = pd.read_parquet(csvfilenames[0],columns=columns,engine='pyarrow')
 

rowers/tasks.py

@@ -191,7 +191,10 @@ def getagegrouprecord(age,sex='male',weightcategory='hwt',
                       distance=2000,duration=None,indf=pd.DataFrame()):
 
     if not duration:
+		try:
         	df = indf[indf['distance'] == distance]
+		except KeyError:
+			df = pd.DataFrame()
     else:
         duration = 60*int(duration)
         df = indf[indf['duration'] == duration]