Update app.py

app.py

@@ -7,6 +7,8 @@ import re
 import warnings
 import traceback
 
+
+
 warnings.filterwarnings("ignore")
 
 # os.environ['SDK_CLIENT_HOST'] = 'https://pre-engine-aiearth.aliyun.com'
@@ -221,7 +223,7 @@ def load_dataset_info():
 def page_reset_callback():
     st.session_state['dateset_picker'] = 'LANDSAT_LT05_T02_T1_L2'
     st.session_state['region_province_select'] = '北京市'
-    st.session_state['region_city_select'] = '请选择'
+    st.session_state['region_city_select'] = '请选择城市'
     st.session_state['region_district_select'] = '请选择'
     st.session_state['time_picker'] = [datetime.date(2011, 1, 1), datetime.date(2011, 6, 30)]
     st.session_state['cloud_picker'] = '20%'