cleanup

app.py

@@ -16,8 +16,7 @@ st.session_state['userInput'] = st.text_input('Enter a target transcript (or sub
 
 # input is too short
 if len(st.session_state['userInput']) < GUIDE_LEN:
-    st.write('Transcript length must be >= 23 bases. It is {:d} chars'.format(len(st.session_state['userInput'])))
-    st.write('')
+    st.write('Transcript length ({:d}) must be >= 23 bases.'.format(len(st.session_state['userInput'])))
 
 # valid input
 elif all([True if nt.upper() in NUCLEOTIDE_TOKENS.keys() else False for nt in st.session_state['userInput']]):