Streamlit python app to show simple exoplanets plot

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# file exoplanets-per-year.py
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# run this from a cocalc terminal with
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#   streamlit run exoplanets-per-year.py
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# make sure you have baseUrlPath set as in
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#   https://doc.cocalc.com/howto/streamlit.html
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# after launching streamlit, point your browser at
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#   https://cocalc.com/<project-id>/port/8501/
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import streamlit as st
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import pandas as pd
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import seaborn as sns
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import matplotlib
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from matplotlib.figure import Figure
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st.markdown('# Exoplanets Found Each Year')
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# csv file is generated here:
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# https://cocalc.com/drxyzzy/experimental/exoplanets
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df = pd.read_csv("exo.csv")
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fig = Figure()
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ax = fig.subplots()
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g = sns.barplot(x=df['year'],
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            y=df['count'],  ax=ax)
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#g.set_yscale("log")
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ax.set_xlabel('Year')
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ax.set_ylabel('Number of exoplanets confirmed')
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ax.set_xticklabels(ax.get_xticklabels(),rotation = 80)
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st.pyplot(fig)
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