Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Post History

66%
+4 −1
Q&A Load environment variables from .env file in Python 3 [closed]

In Python 2, I was able to create a file named .env within a project folder like so: # .env MY_ID=abc123 TOKEN=4567890 Then in a Python file in the same directory, I could read these variable...

0 answers  ·  posted 2y ago by qohelet‭  ·  closed 2y ago by Alexei‭

#6: Question closed by user avatar Alexei‭ · 2022-05-01T06:12:35Z (almost 2 years ago)
#5: Post edited by user avatar hkotsubo‭ · 2022-02-02T15:56:00Z (about 2 years ago)
fix quotes in code, minor fixes in formatting
Load environment variables from .env file in Python 3
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ[MY_ID]
  • token = os.environ[TOKEN]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a KeyError.
  • Trying `os.getenv()` instead of `os.environ()` (as I saw in forum postings) results in `TypeError: 'function' object is not subscriptable`.
  • Is there a simple way to read these variables as environment variables from a `.env` file using this paradigm or do I need to implement a custom config in Python 3?
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ["MY_ID"]
  • token = os.environ["TOKEN"]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a `KeyError` when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a `KeyError`.
  • Trying `os.getenv()` instead of `os.environ()` (as I saw in forum postings) results in `TypeError: 'function' object is not subscriptable`.
  • Is there a simple way to read these variables as environment variables from a `.env` file using this paradigm or do I need to implement a custom config in Python 3?
#4: Post edited by user avatar Alexei‭ · 2022-02-02T10:40:05Z (about 2 years ago)
added relevant tag
#3: Post edited by user avatar qohelet‭ · 2022-02-02T09:16:37Z (about 2 years ago)
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a KeyError (`raise KeyError(key) from None`).
  • Trying `os.getenv()` instead of `os.environ()` results in `TypeError: 'function' object is not subscriptable`.
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a KeyError.
  • Trying `os.getenv()` instead of `os.environ()` (as I saw in forum postings) results in `TypeError: 'function' object is not subscriptable`.
  • Is there a simple way to read these variables as environment variables from a `.env` file using this paradigm or do I need to implement a custom config in Python 3?
#2: Post edited by user avatar qohelet‭ · 2022-02-02T09:14:39Z (about 2 years ago)
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a KeyError (`raise KeyError(key) from None`).
  • In Python 2, I was able to create a file named `.env` within a project folder like so:
  • # .env
  • MY_ID=abc123
  • TOKEN=4567890
  • Then in a Python file in the same directory, I could read these variables like so:
  • # example.py
  • import os
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • This would work fine and load these variables from the file automatically when run.
  • In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),
  • So instead I tried to use the `python-dotenv` package to load the variables like so:
  • # example.py
  • import os
  • from dotenv import load_dotenv
  • load_dotenv()
  • id = os.environ[“MY_ID”]
  • token = os.environ[“TOKEN”]
  • But this still results in a KeyError (`raise KeyError(key) from None`).
  • Trying `os.getenv()` instead of `os.environ()` results in `TypeError: 'function' object is not subscriptable`.
#1: Initial revision by user avatar qohelet‭ · 2022-02-02T09:13:13Z (about 2 years ago)
Load environment variables from .env file in Python 3
In Python 2, I was able to create a file named `.env` within a project folder like so:

    # .env
    MY_ID=abc123
    TOKEN=4567890

Then in a Python file in the same directory, I could read these variables like so:

    # example.py
    import os

    id = os.environ[“MY_ID”]
    token = os.environ[“TOKEN”]

This would work fine and load these variables from the file automatically when run.

In Python 3, this is not working (I get a KeyError when trying to read the first environment variable),

So instead I tried to use the `python-dotenv` package to load the variables like so:

    # example.py
    import os
    from dotenv import load_dotenv

    load_dotenv()

    id = os.environ[“MY_ID”]
    token = os.environ[“TOKEN”]

But this still results in a KeyError (`raise KeyError(key) from None`).