updated with new set

app.py

@@ -7,3 +7,13 @@ st.write(pd.DataFrame({
     'second column': [10, 20, 30, 40]
 }))
 
+DATE_COLUMN = 'date/time'
+DATA_URL = ('https://s3-us-west-2.amazonaws.com/'
+         'streamlit-demo-data/uber-raw-data-sep14.csv.gz')
+
+def load_data(nrows):
+    data = pd.read_csv(DATA_URL, nrows=nrows)
+    lowercase = lambda x: str(x).lower()
+    data.rename(lowercase, axis='columns', inplace=True)
+    data[DATE_COLUMN] = pd.to_datetime(data[DATE_COLUMN])
+    return data