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app.py
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app.py
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from curses.ascii import alt
from urllib.error import URLError
import streamlit as st
import pandas as pd
import numpy as np
st.title('Beat Djokovic once and for all')
DATE_COLUMN = 'date/time'
DATA_URL = ('https://s3-us-west-2.amazonaws.com/'
'streamlit-demo-data/uber-raw-data-sep14.csv.gz')
@st.cache
def get_UN_data():
AWS_BUCKET_URL = "http://streamlit-demo-data.s3-us-west-2.amazonaws.com"
df = pd.read_csv(AWS_BUCKET_URL + "/agri.csv.gz")
return df.set_index("Region")
try:
df = get_UN_data()
countries = st.multiselect(
"Choose countries", list(df.index), ["China", "United States of America"]
)
if not countries:
st.error("Please select at least one country.")
else:
data = df.loc[countries]
data /= 1000000.0
st.write("### Gross Agricultural Production ($B)", data.sort_index())
data = data.T.reset_index()
data = pd.melt(data, id_vars=["index"]).rename(
columns={"index": "year", "value": "Gross Agricultural Product ($B)"}
)
chart = (
alt.Chart(data)
.mark_area(opacity=0.3)
.encode(
x="year:T",
y=alt.Y("Gross Agricultural Product ($B):Q", stack=None),
color="Region:N",
)
)
st.altair_chart(chart, use_container_width=True)
except URLError as e:
st.error(
"""
**This demo requires internet access.**
Connection error: %s
"""
% e.reason
)