import plotly.graph_objects as go
weekly_sales = dict({
    "data": [{
        "type": "bar", 
        "x": ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"], 
        "y": [28, 27, 25, 31, 32, 35, 36]
    }], 
    "layout" : {"title": {"text": "Sales of the week", 
                          "x": 0.5, "font": {"color": "red", "size": 15}}}
})

fig = go.Figure(weekly_sales)
fig.show()

plotly.io.templates

Templates configuration
-----------------------
    Default template: 'plotly'
    Available templates:
        ['ggplot2', 'seaborn', 'simple_white', 'plotly',
         'plotly_white', 'plotly_dark', 'presentation', 'xgridoff',
         'ygridoff', 'gridon', 'none']

fig.layout.template = 'ggplot2'
fig.show()

fig.write_html('html_plot.html', config={'toImageButtonOptions':{'format': 'svg'}})

fig.write_image('path/to/image_file.svg',height=600, width=850)

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-11-691564193a43> in <module>
----> 1 fig.write_image('img/tutorial.png', height = 600, width = 850)

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/plotly/basedatatypes.py in write_image(self, *args, **kwargs)
   3819         import plotly.io as pio
   3820 
-> 3821         return pio.write_image(self, *args, **kwargs)
   3822 
   3823     # Static helpers

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/plotly/io/_kaleido.py in write_image(fig, file, format, scale, width, height, validate, engine)
    266     # -------------
    267     # Do this first so we don't create a file if image conversion fails
--> 268     img_data = to_image(
    269         fig,
    270         format=format,

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/plotly/io/_kaleido.py in to_image(fig, format, width, height, scale, validate, engine)
    132     # Raise informative error message if Kaleido is not installed
    133     if scope is None:
--> 134         raise ValueError(
    135             """
    136 Image export using the "kaleido" engine requires the kaleido package,

ValueError: 
Image export using the "kaleido" engine requires the kaleido package,
which can be installed using pip:
    $ pip install -U kaleido

pip install -U kaleido

fig.write_image('img/tutorial.png', height = 600, width = 850)

import plotly.graph_objects as go

fig = go.Figure()
fig.show()

import plotly
print(plotly.__version__)

5.1.0

jupyter labextension install jupyterlab-plotly

import plotly
plotly.offline.init_notebook_mode(connected=True)

import plotly.graph_objects as go
weekly_sales = dict({
    "data": [{
        "type": "bar", 
        "x": ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"], 
        "y": [28, 27, 25, 31, 32, 35, 36]
    }], 
    "layout" : {"title": {"text": "Sales of the week", 
                          "x": 0.5, "font": {"color": "red", "size": 15}}}
})

fig = go.Figure(weekly_sales)
fig.show()

virtualenv venv
created virtual environment CPython3.9.12.final.0-64 in 5343ms
  creator CPython3Windows(dest=C:\Users\human\Desktop\flask-resume-evan-examples\venv, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy,
app_data_dir=C:\Users\human\AppData\Local\pypa\virtualenv)
    added seed packages: pip==22.2.2, setuptools==63.2.0, wheel==0.37.1
  activators BashActivator,BatchActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator

pip install Flask

from flask import Flask, render_template

app = Flask(__name__)

@app.route('/')
def index():
    first_name = 'Evan'
    return render_template('index.html', f_name = first_name)

git clone https://github.com/your_name/your_unique_repo.git

virtualenv venv

source venv/Scripts/activate

pip install dash plotly Flask pandas gunicorn psycopg2-binary SQLAlchemy Flask-SQLAlchemy

# -*- coding:utf-8 -*-

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return "Hello World"

pip freeze > requirements.txt

$ ls
app.py  Procfile  README.md  requirements.txt  runtime.txt  venv/

from app import app

if __name__ == "__main__":
    app.run(threaded=True, port=5000)

heroku login
heroku create your_project_repo
git add .
git commit -m "initial updated"
git push # github repo에 추가
git push heroku main