The 'flask-compress' distribution was not found and is required by the application #1606

europa502 · 2021-04-27T15:39:00Z

When using cx_freeze to build a dash app I get the following error-

Traceback (most recent call last):
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\cx_Freeze\initscripts\__startup__.py", line 81, in run
    module.run()
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\cx_Freeze\initscripts\Console.py", line 36, in run
    exec(code, m.__dict__)
  File "strata.py", line 1, in <module>
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\dash_core_components\__init__.py", line 6, in <module>
    import dash as _dash
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\dash\__init__.py", line 5, in <module>
    from .dash import Dash, no_update  # noqa: F401,E402
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\dash\dash.py", line 53, in <module>
    _flask_compress_version = parse_version(get_distribution("flask-compress").version)
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\pkg_resources\__init__.py", line 480, in get_distribution
    dist = get_provider(dist)
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\pkg_resources\__init__.py", line 356, in get_provider
    return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\pkg_resources\__init__.py", line 899, in require
    needed = self.resolve(parse_requirements(requirements))
  File "C:\Users\menonAbhijit\AppData\Local\Programs\Python\Python39\lib\site-packages\pkg_resources\__init__.py", line 785, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'flask-compress' distribution was not found and is required by the application

Here are the versions of dash and flask modules I'm using-

dash==1.19.0
dash-bootstrap-components==0.12.0
dash-core-components==1.15.0
dash-html-components==1.1.2
dash-renderer==1.9.0
dash-table==4.11.2
Flask==1.1.2
Flask-Compress==1.9.0

The issue is in this line -

dash/dash/dash.py

Line 53 in 597dc22

    
           _flask_compress_version = parse_version(get_distribution("flask-compress").version)

I do understand why this could be a problem. When building cx_freeze imports the required packages. Hence, Flask-Compress is imported as flask_compress. While all the imports work well within the built app, when a package is verified with its name.

I dug a little deeper to see if there was any attribute being set in the package that'd help us get the version info simply by importing it into dash.py, but I couldn't find any. I have opened an issue here as well -colour-science/flask-compress#23 (comment)

Please let me know if there is any fix for the cx_freeze issue.

The text was updated successfully, but these errors were encountered:

alexcjohnson · 2021-04-28T22:54:50Z

Thanks @europa502! We're going to need the pkg_resoureces solution regardless, since the version distinction we care about (>=1.6.0) doesn't have a __version__ attribute, but I do appreciate you pushing for an upstream fix!

On my system get_distribution works equally well whether I capitalize the package or not:

>>> from pkg_resources import get_distribution, parse_version
>>> get_distribution('flask-compress')
Flask-Compress 1.5.0 (/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages)
>>> get_distribution('Flask-Compress')
Flask-Compress 1.5.0 (/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages)

But it appears the canonical name is capitalized, and the implication is that on your system only the capitalized version succeeds, in which case the solution is simply to use the capitalized name? Though, if that were the problem you wouldn't be able to run Dash at all on your system, so it sounds rather as though there's something funny about calling get_distribution within cx_freeze. Then we could just wrap that call in a try/except, yielding a dummy (low?) version number if it fails.

anders-kiaer · 2021-04-29T16:44:39Z

Only slightly related to the initial issue description, but I can recommend importlib.metadata. I find it more robust + efficient + cleaner API compared to setuptools' pkg_resources. AND it is part of the Python std.lib on 3.8+, and have a backport for Python 3.6+. I.e. not relevant for Dash today, but might be relevant when Python 2.7 support is dropped (unless solved upstream before that).

from importlib.metadata import version

version("flask-compress")  # == '1.9.0' on my computer

europa502 · 2021-04-30T06:01:41Z

I built the app again on python 3.6, and it worked like a charm. I face this issue when I try to build it on python 3.9.

A similar issue was raised here, but the merged fix didn't work for me. Eventually I had to use the workaround to make it work with python 3.9.

I'll try to figure out the root cause this weekend.

europa502 · 2021-08-06T04:09:20Z

This issue is fixed with the release of cx_Freeze 6.7. Thanks!

giadasp · 2021-08-27T18:31:39Z

Hey guys, I'm trying to distribute a simple dash app with cx_freeze (updated to 6.7) but still I have this problem or flask-compress not found.
These are the steps I followed:

create a venv
activate the venv
install packages from requirements. txt:
dash==1.19.0 dash-bootstrap-components==0.12.0 dash-core-components==1.15.0 dash-html-components==1.1.2 dash-renderer==1.9.0 dash-table==4.11.2 Flask==1.1.2 Flask-Compress==1.9.0
create the files app.py, server.py e setup.py as follows:
app.py:

import dash
import dash_html_components as html
import dash_core_components as dcc

app = dash.Dash(__name__)

server = app.server

app.layout = html.Div(children=[
    html.H1(children='Hello Dash'),

    html.Div(children='''
        Dash: A web application framework for Python.
    '''),

    dcc.Graph(
        id='example-graph',
        figure={
            'data': [
                {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
                {'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
            ],
            'layout': {
                'title': 'Dash Data Visualization'
            }
        }
    )
])

if __name__ == '__main__':
    app.run_server(host='0.0.0.0', port=8049)

server.py:

from waitress import serve

from app1 import app

server = app.server

serve(server, port=8049)

setup.py:

from setuptools import find_packages
from cx_Freeze import setup, Executable


options = {
    'build_exe': {
        'includes': [
            'cx_Logging', 'idna',
        ],
        'packages': [
            'asyncio', 'flask', 'jinja2', 'dash', 'plotly', 'waitress', 'pkg_resources'
        ],
        'excludes': ['tkinter']
    }
}

executables = [
    Executable('server.py',
               base='Win32GUI',    #'console',
               targetName='app1.exe')
]

setup(
    name='app1',
    packages=find_packages(),
    version='0.0.1',
    description='ms',
    executables=executables,
    options=options
)

run

python setup.py bdist_msi

install the app
run the app and I have the error message.

What's wrong with my approach?
Please help me!

MrJeric0 · 2021-10-07T00:15:33Z

Hey guys, I'm trying to distribute a simple dash app with cx_freeze (updated to 6.7) but still I have this problem or flask-compress not found. These are the steps I followed:

create a venv

activate the venv

install packages from requirements. txt:
dash==1.19.0 dash-bootstrap-components==0.12.0 dash-core-components==1.15.0 dash-html-components==1.1.2 dash-renderer==1.9.0 dash-table==4.11.2 Flask==1.1.2 Flask-Compress==1.9.0

create the files app.py, server.py e setup.py as follows:
app.py:
import dash
import dash_html_components as html
import dash_core_components as dcc

app = dash.Dash(__name__)

server = app.server

app.layout = html.Div(children=[
    html.H1(children='Hello Dash'),

    html.Div(children='''
        Dash: A web application framework for Python.
    '''),

    dcc.Graph(
        id='example-graph',
        figure={
            'data': [
                {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
                {'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
            ],
            'layout': {
                'title': 'Dash Data Visualization'
            }
        }
    )
])

if __name__ == '__main__':
    app.run_server(host='0.0.0.0', port=8049)
server.py:
from waitress import serve

from app1 import app

server = app.server

serve(server, port=8049)
setup.py:
from setuptools import find_packages
from cx_Freeze import setup, Executable


options = {
    'build_exe': {
        'includes': [
            'cx_Logging', 'idna',
        ],
        'packages': [
            'asyncio', 'flask', 'jinja2', 'dash', 'plotly', 'waitress', 'pkg_resources'
        ],
        'excludes': ['tkinter']
    }
}

executables = [
    Executable('server.py',
               base='Win32GUI',    #'console',
               targetName='app1.exe')
]

setup(
    name='app1',
    packages=find_packages(),
    version='0.0.1',
    description='ms',
    executables=executables,
    options=options
)
run

python setup.py bdist_msi

install the app

run the app and I have the error message.

What's wrong with my approach? Please help me!

hey did you find a solution to this, im running into it as well. Cheers

giadasp · 2021-10-07T15:15:03Z

Nope :(

europa502 · 2021-10-08T04:15:28Z

Hey guys, I'm trying to distribute a simple dash app with cx_freeze (updated to 6.7) but still I have this problem or flask-compress not found. These are the steps I followed:

* create a venv

* activate the venv

* install packages from requirements. txt:
  `dash==1.19.0 dash-bootstrap-components==0.12.0 dash-core-components==1.15.0 dash-html-components==1.1.2 dash-renderer==1.9.0 dash-table==4.11.2 Flask==1.1.2 Flask-Compress==1.9.0`

* create the files app.py, server.py e setup.py as follows:
  app.py:

import dash
import dash_html_components as html
import dash_core_components as dcc

app = dash.Dash(__name__)

server = app.server

app.layout = html.Div(children=[
    html.H1(children='Hello Dash'),

    html.Div(children='''
        Dash: A web application framework for Python.
    '''),

    dcc.Graph(
        id='example-graph',
        figure={
            'data': [
                {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
                {'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
            ],
            'layout': {
                'title': 'Dash Data Visualization'
            }
        }
    )
])

if __name__ == '__main__':
    app.run_server(host='0.0.0.0', port=8049)

server.py:

from waitress import serve

from app1 import app

server = app.server

serve(server, port=8049)

setup.py:

from setuptools import find_packages
from cx_Freeze import setup, Executable


options = {
    'build_exe': {
        'includes': [
            'cx_Logging', 'idna',
        ],
        'packages': [
            'asyncio', 'flask', 'jinja2', 'dash', 'plotly', 'waitress', 'pkg_resources'
        ],
        'excludes': ['tkinter']
    }
}

executables = [
    Executable('server.py',
               base='Win32GUI',    #'console',
               targetName='app1.exe')
]

setup(
    name='app1',
    packages=find_packages(),
    version='0.0.1',
    description='ms',
    executables=executables,
    options=options
)

* run

python setup.py bdist_msi

* install the app

* run the app and I have the error message.

What's wrong with my approach? Please help me!

What version of python are you using?

Fix for plotly#1606

matthew-leon-quandl · 2022-03-24T03:16:03Z

still having this issue:(

YuanJ-i · 2022-09-06T06:43:35Z

It originates from pkg_resources.get_distribution, should be updated.
change this line
_flask_compress_version = parse_version(get_distribution("flask-compress").version)
to
_flask_compress_version = parse_version(importlib.metadata.version("flask-compress"))

alexprengere mentioned this issue Apr 27, 2021

fetching version from __version__ attribute colour-science/flask-compress#23

Closed

europa502 mentioned this issue May 1, 2021

The 'flask-compress' distribution was not found and is required by the application marcelotduarte/cx_Freeze#1041

Closed

europa502 closed this as completed Aug 6, 2021

europa502 added a commit to europa502/dash that referenced this issue Oct 8, 2021

Fetch flask_compress version from __version__ module

fb917de

Fix for plotly#1606

europa502 mentioned this issue Oct 8, 2021

Fetch flask_compress version from __version__ module #1797

Closed

nopria mentioned this issue Sep 13, 2022

Replacing get_distribution with importlib.metadata #2230

Closed

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The 'flask-compress' distribution was not found and is required by the application #1606

The 'flask-compress' distribution was not found and is required by the application #1606

europa502 commented Apr 27, 2021

alexcjohnson commented Apr 28, 2021

anders-kiaer commented Apr 29, 2021

europa502 commented Apr 30, 2021

europa502 commented Aug 6, 2021

giadasp commented Aug 27, 2021 •

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MrJeric0 commented Oct 7, 2021

giadasp commented Oct 7, 2021

europa502 commented Oct 8, 2021

matthew-leon-quandl commented Mar 24, 2022

YuanJ-i commented Sep 6, 2022

The 'flask-compress' distribution was not found and is required by the application #1606

The 'flask-compress' distribution was not found and is required by the application #1606

Comments

europa502 commented Apr 27, 2021

alexcjohnson commented Apr 28, 2021

anders-kiaer commented Apr 29, 2021

europa502 commented Apr 30, 2021

europa502 commented Aug 6, 2021

giadasp commented Aug 27, 2021 • edited Loading

MrJeric0 commented Oct 7, 2021

giadasp commented Oct 7, 2021

europa502 commented Oct 8, 2021

matthew-leon-quandl commented Mar 24, 2022

YuanJ-i commented Sep 6, 2022

giadasp commented Aug 27, 2021 •

edited

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