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flask | The Python micro framework for building web applications. | Web Framework library

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kandi X-RAY | flask Summary

flask is a Python library typically used in Server, Web Framework, Framework applications. flask has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub.
The Python micro framework for building web applications.

kandi-support Support

  • flask has a highly active ecosystem.
  • It has 58462 star(s) with 14977 fork(s). There are 2178 watchers for this library.
  • There were 3 major release(s) in the last 6 months.
  • There are 12 open issues and 2271 have been closed. On average issues are closed in 7 days. There are 1 open pull requests and 0 closed requests.
  • It has a negative sentiment in the developer community.
  • The latest version of flask is 2.1.1

quality kandi Quality

  • flask has 0 bugs and 0 code smells.

securitySecurity

  • flask has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • flask code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.

license License

  • flask is licensed under the BSD-3-Clause License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.

buildReuse

  • flask releases are available to install and integrate.
  • Build file is available. You can build the component from source.
  • flask saves you 4755 person hours of effort in developing the same functionality from scratch.
  • It has 10184 lines of code, 1378 functions and 96 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
Top functions reviewed by kandi - BETA

kandi has reviewed flask and discovered the below as its top functions. This is intended to give you an instant insight into flask implemented functionality, and help decide if they suit your requirements.

  • Generate a URL for the given endpoint .
  • Send a file .
  • Register this blueprint .
  • Start the server .
  • Creates a generator from a generator .
  • Find an app by name or function .
  • Construct a JSON response .
  • Add a url rule .
  • Initialize a dict from a prefixed environment .
  • Return the cookie domain name .

flask Key Features

The Python micro framework for building web applications.

flask Examples and Code Snippets

  • Python/Docker ImportError: cannot import name 'json' from itsdangerous
  • TypeError: __init__() got an unexpected keyword argument 'as_tuple'
  • in VS Code ImportError: cannot import name 'Mapping' from 'collections'
  • How to set schema_translate_map in SQLAlchemy object in Flask app
  • WebSocket not working when trying to send generated answer by keras
  • localhost:5000 unavailable in macOS v12 (Monterey)
  • SQLAlchemy - Adding a ForeignKeyConstraint to a many-to-many table that is based on another relationship
  • Cloud Run Flask API container running shutit enters a sleep loop
  • Create a database trigger in an event listener
  • Docker-compose error -- panic: runtime error: index out of range [1] with length 1

Python/Docker ImportError: cannot import name 'json' from itsdangerous

pip install Flask=2.0.3
-----------------------
pip install Flask=2.0.1
pip install Flask=2.1.0
pip install Flask==1.1.4
pip install markupsafe==2.0.1
-----------------------
pip install Flask=2.0.1
pip install Flask=2.1.0
pip install Flask==1.1.4
pip install markupsafe==2.0.1
-----------------------
pip install Flask=2.0.1
pip install Flask=2.1.0
pip install Flask==1.1.4
pip install markupsafe==2.0.1

Community Discussions

Trending Discussions on flask
  • Python/Docker ImportError: cannot import name 'json' from itsdangerous
  • TypeError: __init__() got an unexpected keyword argument 'as_tuple'
  • in VS Code ImportError: cannot import name 'Mapping' from 'collections'
  • How to set schema_translate_map in SQLAlchemy object in Flask app
  • WebSocket not working when trying to send generated answer by keras
  • Google app engine deployment fails- Error while finding module specification for 'pip' (AttributeError: module '__main__' has no attribute '__file__')
  • localhost:5000 unavailable in macOS v12 (Monterey)
  • SQLAlchemy - Adding a ForeignKeyConstraint to a many-to-many table that is based on another relationship
  • Cloud Run Flask API container running shutit enters a sleep loop
  • Create a database trigger in an event listener
Trending Discussions on flask

QUESTION

Python/Docker ImportError: cannot import name 'json' from itsdangerous

Asked 2022-Mar-31 at 12:49

I am trying to get a Flask and Docker application to work but when I try and run it using my docker-compose up command in my Visual Studio terminal, it gives me an ImportError called ImportError: cannot import name 'json' from itsdangerous. I have tried to look for possible solutions to this problem but as of right now there are not many on here or anywhere else. The only two solutions I could find are to change the current installation of MarkupSafe and itsdangerous to a higher version: https://serverfault.com/questions/1094062/from-itsdangerous-import-json-as-json-importerror-cannot-import-name-json-fr and another one on GitHub that tells me to essentially change the MarkUpSafe and itsdangerous installation again https://github.com/aws/aws-sam-cli/issues/3661, I have also tried to make a virtual environment named veganetworkscriptenv to install the packages but that has also failed as well. I am currently using Flask 2.0.0 and Docker 5.0.0 and the error occurs on line eight in vegamain.py.

Here is the full ImportError that I get when I try and run the program:

veganetworkscript-backend-1  | Traceback (most recent call last):
veganetworkscript-backend-1  |   File "/app/vegamain.py", line 8, in <module>
veganetworkscript-backend-1  |     from flask import Flask
veganetworkscript-backend-1  |   File "/usr/local/lib/python3.9/site-packages/flask/__init__.py", line 19, in <module>
veganetworkscript-backend-1  |     from . import json
veganetworkscript-backend-1  |   File "/usr/local/lib/python3.9/site-packages/flask/json/__init__.py", line 15, in <module>
veganetworkscript-backend-1  |     from itsdangerous import json as _json
veganetworkscript-backend-1  | ImportError: cannot import name 'json' from 'itsdangerous' (/usr/local/lib/python3.9/site-packages/itsdangerous/__init__.py)
veganetworkscript-backend-1 exited with code 1

Here are my requirements.txt, vegamain.py, Dockerfile, and docker-compose.yml files:

requirements.txt:

Flask==2.0.0
Flask-SQLAlchemy==2.4.4
SQLAlchemy==1.3.20
Flask-Migrate==2.5.3
Flask-Script==2.0.6
Flask-Cors==3.0.9
requests==2.25.0
mysqlclient==2.0.1
pika==1.1.0
wolframalpha==4.3.0

vegamain.py:

# Veganetwork (C) TetraSystemSolutions 2022
# all rights are reserved.  
# 
# Author: Trevor R. Blanchard Feb-19-2022-Jul-30-2022
#

# get our imports in order first
from flask import Flask # <-- error occurs here!!!

# start the application through flask.
app = Flask(__name__)

# if set to true will return only a "Hello World" string.
Debug = True

# start a route to the index part of the app in flask.
@app.route('/')
def index():
    if (Debug == True):
        return 'Hello World!'
    else:
        pass

# start the flask app here --->
if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0') 

Dockerfile:

FROM python:3.9
ENV PYTHONUNBUFFERED 1
WORKDIR /app
COPY requirements.txt /app/requirements.txt
RUN pip install -r requirements.txt
COPY . /app

docker-compose.yml:

version: '3.8'
services:
  backend:
    build:
      context: .
      dockerfile: Dockerfile
    command: 'python vegamain.py'
    ports:
      - 8004:5000
    volumes:
      - .:/app
    depends_on:
      - db

#  queue:
#    build:
#      context: .
#      dockerfile: Dockerfile
#    command: 'python -u consumer.py'
#    depends_on:
#      - db

  db:
    image: mysql:5.7.22
    restart: always
    environment:
      MYSQL_DATABASE: admin
      MYSQL_USER: root
      MYSQL_PASSWORD: root
      MYSQL_ROOT_PASSWORD: root
    volumes:
      - .dbdata:/var/lib/mysql
    ports:
      - 33069:3306

How exactly can I fix this code? thank you!

ANSWER

Answered 2022-Feb-20 at 12:31

I was facing the same issue while running docker containers with flask.

I downgraded Flask to 1.1.4 and markupsafe to 2.0.1 which solved my issue.

Check this for reference.

Source https://stackoverflow.com/questions/71189819

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install flask

You can download it from GitHub.
You can use flask like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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