What is the use of PYTHONUNBUFFERED in docker file?

Setting PYTHONUNBUFFERED to a non empty value ensures that the python output is sent straight to terminal (e.g. your container log) without being first buffered and that you can see the output of your application (e.g. django logs) in real time.

This also ensures that no partial output is held in a buffer somewhere and never written in case the python application crashes.

References:

Related Posts:

  1. How can I upgrade specific packages using pip and a requirements file?
  2. How do I pass environment variables to Docker containers?
  3. How to switch Python versions in Terminal?
  4. denied: requested access to the resource is denied : docker
  5. What is the difference between the ‘COPY’ and ‘ADD’ commands in a Dockerfile?
  6. ‘NOT NULL constraint failed’ after adding to models.py
  7. django display message after POST form submit
  8. CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
  9. “The path python3 (from –python=python3) does not exist” error
  10. How can I get the file name from request.FILES?
  11. Django TemplateDoesNotExist?
  12. “docker build” requires exactly 1 argument(s)
  13. Django: no such table: django_session
  14. Implementing a SOA in Django using celery
  15. Django 1.7 upgrade error: AppRegistryNotReady: Apps aren’t loaded yet
  16. Python/Django: log to console under runserver, log to file under Apache
  17. What is a NoReverseMatch error, and how do I fix it?
  18. Docker: unable to prepare context: unable to evaluate symlinks in Dockerfile path: GetFileAttributesEx
  19. python: can’t open file ‘manage.py’: [Errno 2] No such file or directory
  20. Cannot find command ‘git’ – windows
  21. How to revert the last migration?
  22. Output Django queryset as JSON
  23. Getting stuck at Django error: No module named registration
  24. Django __str__ returned non-string (type NoneType)
  25. ow to ‘bulk update’ with Django?
  26. Change directory command in Docker?
  27. Why do I get sqlite error, “unable to open database file”?
  28. How to fix “VirtualBox Interface has active connections” error in Windows?
  29. Docker: How to delete all local Docker images
  30. Cannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running?
  31. How to copy files from host to Docker container?
  32. How can I use environment variables in Nginx.conf
  33. Getting TypeError: __init__() missing 1 required positional argument: ‘on_delete’ when trying to add parent table after child table with entries
  34. Is #include bad practice?
  35. How do I get into a Docker container’s shell?
  36. Getting TypeError: __init__() missing 1 required positional argument: ‘on_delete’ when trying to add parent table after child table with entries
  37. Copy directory to another directory using ADD command
  38. Copy directory to another directory using ADD command
  39. What is the difference between a Docker image and a container?
  40. Django: ImproperlyConfigured: The SECRET_KEY setting must not be empty
  41. docker : invalid reference format
  42. Failed to get D-Bus connection: Operation not permitted
  43. docker command not found even though installed with apt-get
  44. Docker how to change repository name or rename image?
  45. How to fix docker: Got permission denied issue
  46. Can’t connect to docker from docker-compose
  47. Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock
  48. Docker: Copying files from Docker container to host
  49. django MultiValueDictKeyError error, how do I deal with it
  50. installing cPickle with python 3.5
  51. standard_init_linux.go:178: exec user process caused “exec format error”
  52. NumPy array is not JSON serializable
  53. pip install -r requirements.txt [Errno 2] No such file or directory: ‘requirements.txt’
  54. Django reverse lookup of foreign keys
  55. How to fix error “ERROR: Command errored out with exit status 1: python.” when trying to install django-heroku using pip
  56. Docker-compose container using host DNS server
  57. H14 error in heroku – “no web processes running”
  58. What does this Django regular expression mean? `?P`
  59. docker: “build” requires 1 argument. See ‘docker build –help’
  60. Correct way to detach from a container without stopping it
  61. Is it better to use path() or url() in urls.py for django 2.0?
  62. Uncaught Reference Error: stLight is not defined (in Chrome only)
  63. build context for docker image very large
  64. What is a “slug” in Django?
  65. What does on_delete do on Django models?
  66. How to check if a user is logged in (how to properly use user.is_authenticated)?
  67. gunicorn.errors.HaltServer: django
  68. coercing to Unicode: need string or buffer, NoneType found when rendering in django admin
  69. Why am I getting an RTNETLINK Operation Not Permitted when using Pipework with Docker containers?
  70. How can I expose more than 1 port with Docker?
  71. Docker – Bind for 0.0.0.0:4000 failed: port is already allocated
  72. What is related_name used for?
  73. kubectl get pods shows ErrImagePull
  74. Docker container will automatically stop after “docker run -d”
  75. How to search images from private 1.0 registry in docker?
  76. Docker compose, running containers in net:host
  77. __init__() got an unexpected keyword argument ‘user’
  78. Where is the Docker daemon log?
  79. Docker WordPress can’t update/install plugins
  80. bitnami/WordPress chart – embed uploads in a custom image
  81. bitnami/WordPress chart – embed uploads in a custom image
  82. Can’t install local plugin (zip) with wp-cli [closed]
  83. Implement ssl to a WP docker container [closed]
  84. How do i export my database from docker
  85. WordPress on Docker: how to update website/plugin?
  86. wp-admin Redirects to Docker Container Name
  87. Volume mounts when setting up WordPress with docker [closed]
  88. Deploy WordPress From Local Docker to Hosting Provider
  89. wordpress in nginx docker container connected to php:8-fpm container and mariadb container isn’t creating any tables on plugin activation
  90. What is the best way to install a WordPress starter theme into a Docker environment?
  91. Custom location for attached images
  92. ERROR: No such service: nginx when building wordpress with docker [closed]
  93. Should I use docker in wordpress production?
  94. New wordpress keep redirecting to localhost/wp-admin/install.php
  95. WordPress /wp-admin redirect to wrong port in docker
  96. WordPress DevOps – Environments (Rancher, Kubernetes, etc…)
  97. Why do I need Nginx and something like Gunicorn?
  98. Multiple commands in Docker CMD directive
  99. Why isn’t ifconfig available in Ubuntu Docker container?
  100. Trouble Finding Error Logs in wp-env

Leave a Comment

tech