CODEWITHSUNDEEP
pythonstreamlit
vetheve
vetheve

Reputation: 229

Set default value for selectbox

I am new to streamlit. I tried to set a default value for sidebar.selectbox. The code is below. I appreciate the help! Thank you in advance.

st.sidebar.header('Settings')

fichier = st.sidebar.selectbox('Dataset', ('djia', 'msci', 'nyse_n', 'nyse_o', 'sp500', 'tse'))

window_ANTICOR = st.sidebar.selectbox('Window ANTICOR', ['<select>',3, 5, 10, 15, 20, 30])
if window_ANTICOR == '<select>':    
    window_ANTICOR == 30

window_OLMAR = st.sidebar.selectbox('Window OLMAR', ['<select>',3, 5, 10, 15, 20, 30])
if window_OLMAR == '<select>':    
    window_OLMAR == 5

eps_OLMAR = st.sidebar.selectbox('Eps OLMAR', ['<select>', 3, 5, 10, 15, 20, 30])
if eps_OLMAR == '<select>':    
    eps_OLMAR == 10

eps_PAMR = st.sidebar.selectbox('Eps PAMR', ['<select>',0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1])
if eps_PAMR == '<select>':    
    eps_PAMR == 0.5

variant = st.sidebar.selectbox('Variant PAMR', (0, 1, 2))
if variant == '<select>':    
    eps_PAMR == 0

Upvotes: 17

Views: 40353

Answers (3)

Vikrala Pavan
Vikrala Pavan

Reputation: 19

values = ['Select', 10, 15, 20, 25, 30]
default_ix = values.index(10)
if values == 'Select':
    st.warning("Choose the integers from the list in the dropdown")
else:
    components = st.selectbox("Select the components below⤵️", values, 
    index=default_ix)

Upvotes: 1

AtmaKumar Rai
AtmaKumar Rai

Reputation: 19

you can directly give index also for default position

bins = st.sidebar.radio(label="Category :", options=n3, index=0) for more information enter link description here

Upvotes: 2

wlo
wlo

Reputation: 723

Use the index keyword of the selectbox widget. Pass the index of the value in the options list that you want to be the default choice.

E.g. if you wanted to set the default choice of the selectbox labeled 'Window ANTICOR' to 30 (which you appear to be trying to do), you could simply do this:

values = ['<select>',3, 5, 10, 15, 20, 30]
default_ix = values.index(30)
window_ANTICOR = st.sidebar.selectbox('Window ANTICOR', values, index=default_ix)

Source: https://docs.streamlit.io/library/api-reference/widgets/st.selectbox

Upvotes: 25

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