utils.py

# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import inspect
import textwrap
import plotly.graph_objects as go

import streamlit as st


def show_code(demo):
    """Showing the code of the demo."""
    show_code = st.sidebar.checkbox("Show code", True)
    if show_code:
        # Showing the code of the demo.
        st.markdown("## Code")
        sourcelines, _ = inspect.getsourcelines(demo)
        st.code(textwrap.dedent("".join(sourcelines[1:])))

def plotly_line_chart(data, columns, styles={}, yaxis={}, index_name=None, title=''):
    fig = go.Figure()
    for c in columns:
        if c not in data:
            continue
        ls = styles[c] if c in styles else None
        y = yaxis[c] if c in yaxis else 'y1'
        fig.add_trace(
            go.Scatter(x=data.index if index_name is None else data[index_name], y=data[c],
                       line=ls, yaxis=y, name=c),
        )
    fig.update_layout(title=go.layout.Title(text=title, xref='paper', x=0.35),
                      yaxis2=dict(side='right'))
    st.plotly_chart(fig)