000_Cheatsheet.py

import streamlit as st

'**https://docs.streamlit.io/library/cheatsheet**'

'**===================================================**'

add_sidebar = st.sidebar.selectbox('Aggregate or Individual Video', ('Aggregate Metrics','Individual Video Analysis'))

st.write('Hello world!')

st.header('st.button')

if st.button('Say hello'):
     st.write('Why hello there')
else:
     st.write('Goodbye')
     
add_sidebar = st.sidebar.selectbox('ABCDEF', ('ABC','DEF'))

# Magic commands implicitly
# call st.write().
'_This_ is some **Markdown***'
# my_variable
# 'dataframe:', my_data_frame

'**===================================================**'
st.title('Display Text')

st.text('Fixed width text')
st.markdown('_Markdown_') # see *
st.latex(r''' e^{i\pi} + 1 = 0 ''')
st.write('Most objects') # df, err, func, keras!
st.write(['st', 'is <', 3]) # see *
st.title('My title')
st.header('My header')
st.subheader('My sub')
st.code('for i in range(8): foo()')
# * optional kwarg unsafe_allow_html = True

'**===================================================**'
st.title('Display Data')

# st.dataframe(my_dataframe)
# st.table(data.iloc[0:10])
st.json({'foo':'bar','fu':'ba'})
st.metric('My metric', 42, 2)

'**===================================================**'
st.title('Display Media')

st.image('./20230208.jpg')
st.image('./20230124.jpg')
# st.audio(data)
# st.video(data)

'**===================================================**'
st.title('Add Widgets to Sidebar')

# Just add it after st.sidebar:
# >>> a = st.sidebar.radio('Select one:', [1, 2])

# Or use "with" notation:
# >>> with st.sidebar:
# >>>     st.radio('Select one:', [1, 2])

'**===================================================**'
st.title('Columns')

# Two equal columns:
# >>> col1, col2 = st.columns(2)
# >>> col1.write("This is column 1")
# >>> col2.write("This is column 2")

# Three different columns:
# >>> col1, col2, col3 = st.columns([3, 1, 1])
# col1 is larger.

# You can also use "with" notation:
# >>> with col1:
# >>>   st.radio('Select one:', [1, 2])

'**===================================================**'
st.title('Tabs')

# Insert containers separated into tabs:
tab1, tab2 = st.tabs(["Tab 1", "Tab2"])
tab1.write("this is tab 1")
tab2.write("this is tab 2")

# You can also use "with" notation:
with tab1:
  st.radio('Select one:', [1, 2])

'**===================================================**'
st.title('Control Flow')

# Stop execution immediately:
# st.stop()

# Rerun script immediately:
# st.experimental_rerun()

# Group multiple widgets:
with st.form(key='my_form'):
  username = st.text_input('Username')
  password = st.text_input('Password')
  st.form_submit_button('Login')

'**===================================================**'
st.title('Display Interactive Widgets')

st.button('Click me')
st.checkbox('I agree')
st.radio('Pick one', ['cats', 'dogs'])
st.selectbox('Pick one', ['cats', 'dogs'])
st.multiselect('Buy', ['milk', 'apples', 'potatoes'])
st.slider('Pick a number', 0, 100)
st.select_slider('Pick a size', ['S', 'M', 'L'])
st.text_input('First name')
st.number_input('Pick a number', 0, 10)
st.text_area('Text to translate')
st.date_input('Your birthday')
st.time_input('Meeting time')
st.file_uploader('Upload a CSV')
# st.download_button('Download file', data)
st.camera_input("Take a picture")
st.color_picker('Pick a color')

# Use widgets' returned values in variables:
# >>> for i in range(int(st.number_input('Num:'))):
# >>>   foo()
# >>> if st.sidebar.selectbox('I:',['f']) == 'f':
# >>>   b()
# >>> my_slider_val = st.slider('Quinn Mallory', 1, 88)
# >>> st.write(slider_val)

# Disable widgets to remove interactivity:
st.slider('Pick a number', 0, 50, disabled=True)

'**===================================================**'
st.title('Mutate Data')

# Add rows to a dataframe after showing it.
# >>> element = st.dataframe(df1)
# >>> element.add_rows(df2)

# Add rows to a chart after showing it.
# >>> element = st.line_chart(df1)
# >>> element.add_rows(df2)

'**===================================================**'
st.title('Display Code')

with st.echo():
  st.write('Code will be executed and printed')

'**===================================================**'
st.title('Placeholders, Help, and Options')

# Replace any single element.
# >>> element = st.empty()
# >>> element.line_chart(...)
# >>> element.text_input(...)  # Replaces previous.

# Insert out of order.
# >>> elements = st.container()
# >>> elements.line_chart(...)
st.write("Hello")
# >>> elements.text_input(...)  # Appears above "Hello".

# st.help(pandas.DataFrame)
# st.get_option(key)
# st.set_option(key, value)
# st.set_page_config(layout='wide')
# st.experimental_show(objects)
# st.experimental_get_query_params()
# st.experimental_set_query_params(**params)

'**===================================================**'
st.title('Optimize Performance')

# Legacy caching
# >>> @st.cache
# ... def foo(bar):
# ...   # Do something expensive in here...
# ...   return data
# >>> # Executes foo
# >>> d1 = foo(ref1)
# >>> # Does not execute foo
# >>> # Returns cached item by reference, d1 == d2
# >>> d2 = foo(ref1)
# >>> # Different arg, so function foo executes
# >>> d3 = foo(ref2)

'**===================================================**'
st.title('Cache Data Objects')

# E.g. Dataframe computation, storing downloaded data, etc.
# >>> @st.experimental_memo
# ... def foo(bar):
# ...   # Do something expensive and return data
# ...   return data
# # Executes foo
# >>> d1 = foo(ref1)
# # Does not execute foo
# # Returns cached item by value, d1 == d2
# >>> d2 = foo(ref1)
# # Different arg, so function foo executes
# >>> d3 = foo(ref2)
# # Clear all cached entries for this function
# >>> foo.clear()
# # Clear values from *all* memoized functions
# >>> st.experimental_memo.clear()

'**===================================================**'
st.title('Cache Non-data Objects')

# E.g. TensorFlow session, database connection, etc.
# >>> @st.experimental_singleton
# ... def foo(bar):
# ...   # Create and return a non-data object
# ...   return session
# # Executes foo
# >>> s1 = foo(ref1)
# # Does not execute foo
# # Returns cached item by reference, s1 == s2
# >>> s2 = foo(ref1)
# # Different arg, so function foo executes
# >>> s3 = foo(ref2)
# # Clear all cached entries for this function
# >>> foo.clear()
# # Clear all singleton caches
# >>> st.experimental_singleton.clear()

'**===================================================**'
st.title('Display Progress and Status')

import time
with st.spinner(text='In progress'):
  time.sleep(5)
  st.success('Done')

# st.progress(progress_variable_1_to_100)
st.balloons()
st.snow()
st.error('Error message')
st.warning('Warning message')
st.info('Info message')
st.success('Success message')
# st.exception(e)

'**===================================================**'
st.title('Personalize Apps for Users')

# Show different content based on the user's email address.
# >>> if st.user.email == 'jane@email.com':
# >>>    display_jane_content()
# >>> elif st.user.email == 'adam@foocorp.io':
# >>>    display_adam_content()
# >>> else:
# >>>    st.write("Please contact us to get access!")


'**===================================================**'
st.title('The End!')