add available countries and brands

app.py

@@ -48,8 +48,8 @@ def plot_data(filtered_data):
 def main():
     st.title("Data Visualization App")
 
-    # Step 1: Select Year
-    year = st.sidebar.selectbox("Select Year", range(2017, 2022))
+    # Step 1: Select Year, default to 2021
+    year = st.sidebar.selectbox("Select Year", range(2017, 2022), index=4)
     
     # Load data based on year selection
     data = load_data(year)
@@ -57,10 +57,14 @@ def main():
     if data is not None:
         # Step 2: Select Country based on available options for the year
         available_countries = data['country'].unique()
+        # default to COUNTRY_6B71
+        available_countries = ["COUNTRY_6B71"] + list(x for x in available_countries if x != "COUNTRY_6B71")
         country = st.sidebar.selectbox("Select Country", available_countries)
         
         # Step 3: Select Brand based on available options for the year and country
         available_brands = data[data['country'] == country]['brand'].unique()
+        # default to BRAND_24CB
+        available_brands = ["BRAND_24CB"] + list(x for x in available_brands if x != "BRAND_24CB")
         brand = st.sidebar.selectbox("Select Brand", available_brands)
         
         # Filter data based on inputs