Modify filepicker

file_picker.py

@@ -25,7 +25,7 @@ def st_file_selector(st_placeholder, path='.', label='Select a file/folder', key
     if key+'curr_dir' not in st.session_state:
         base_path = '.' if path is None or path == '' else path
         base_path = base_path if os.path.isdir(base_path) else os.path.dirname(base_path)
-        base_path = '.' if base_path is None or base_path is '' else base_path
+        base_path = '.' if base_path is None or base_path == '' else base_path
 
         files = sorted(os.listdir(base_path))
         files.insert(0, 'Choose a file...')