In this article, we will show you how to fix the syntaxerror: future feature annotations is not defined in Python.
Since we need to fix this error, we just need to have a better understanding of what this error is all about first.
Continue reading as we discuss the insights on how you can resolve the future feature annotations is not defined in a simple and effective way.
What is “future feature annotations”?
The future feature annotations, also known as type annotations. This feature was introduced in newer versions of programming languages like (Python 3.7) and is described in PEP 563.
It allows users to use forward references in type annotations, which can be useful when defining classes that reference each other.
Apart from that, it allows users to annotate variables, function parameters, and return types with specific types or hints, enhancing code readability and enabling static type checking.
What is “syntaxerror future feature annotations is not defined” in Python?
The syntaxerror: future feature annotations is not defined error message occurs when you are trying to use the from future import annotations statement in a version of Python that does not support the feature.
In addition to that, this error message indicates that the code includes annotations that the interpreter does not recognize.
And making it impossible for the interpreter to understand and execute the instructions correctly, which leads to this syntax error.
This statement is only available starting from Python version 3.7. And if you are using an older version of Python, you will need to upgrade to at least version 3.7 to be able to use this feature.
Why does “future feature annotations is not defined” error occur?
The syntaxerror: future feature annotations is not defined occurs when programmers or developers inadvertently use newer language features without considering the compatibility with the Python version they are currently using.
On the hand, Syntax errors can occur because of several reasons, such as:
❌ Misspelled keywords.
❌ Missing or misplaced punctuation.
❌ Incorrect indentation.
How to fix the “syntaxerror: future feature annotations is not defined” in Python?
To fix the syntaxerror future feature annotations is not defined, it is important to ensure that you are using a compatible version of the programming language that supports future feature annotations.
Upgrading to a newer version or modifying the code to remove the unrecognized annotations can resolve the issue.
Here are the following solutions you can use to resolve this error:
Solution 1: Check your Python version
To check the Python version, open your terminal or command prompt and execute the following command:
✅ python -Vor
✅ python --versionOutput:
Python 3.11.2Alternatively, you use the following code to check your Python version”
✅ import sys
print(sys.version)Output:
3.11.2 (tags/v3.11.2:878ead1, Feb 7 2023, 16:38:35) [MSC v.1934 64 bit (AMD64)]If your version is lower than 3.7, you have to upgrade it in a newer version.
Solution 2: Upgrade Python version
Since the future feature annotations only available starting from Python version 3.7. And if you are using an older version of Python.
The, you to execute the following command to upgrade your Python version:
✅ python -m pip install --upgrade pipIf you want to install the specific version of Python, use the following command:
✅python -m pip install --upgrade python==3.7Solution 3: Remove the from future import annotations statement
When you do not need to use postponed evaluation of annotations, you can simply remove the from future import annotations statement from your code.
For example:
from __future__ import annotations
def foo(b: 'B') -> int:
return 52
result = foo(10)
print(result)If you are using Python version 3.7 below, the above code won’t work for you.
And if updating the language version is not resolving the error.
You can modify the code to remove the unrecognized annotations by removing future feature annotations.
Just ensure compatibility with the current Python version you are using.
Corrected code:
def foo(b: 'B') -> int:
return 52
result = foo(10)
print(result)Output:
52Conclusion
In conclusion, the syntaxerror: future feature annotations is not defined error message occurs when you are trying to use the from future import annotations statement in a version of Python that does not support the feature.
We already discussed above what this error is all about and multiple ways to resolve this error.
By executing the solutions above you can master this Syntaxerror in Python with the help of this guide.
You could also check out other “SyntaxError” articles that may help you in the future if you encounter them.
- Syntaxerror: ‘return’ outside function
- Syntaxerror: eol while scanning string literal
- Syntaxerror: unexpected token export
We are hoping that this article helps you fix the error. Thank you for reading itsourcecoders 😊
Frequently Asked Questions
What is Python SyntaxError and what causes it?
SyntaxError is raised when Python’s parser can’t understand your code. Common causes: missing colon (def foo() instead of def foo():), unmatched parentheses or brackets, incorrect indentation, mixing tabs and spaces, missing comma in a list, or using a Python 3 feature in a Python 2 interpreter (or vice versa). The error points to a line, but the actual issue is often on the line BEFORE.
How do I fix ‘unexpected EOF while parsing’?
Python ran out of code while expecting more, usually unclosed parenthesis, bracket, brace, or quote. Scroll up from the error line and count opening vs closing pairs. Use an IDE with bracket matching (VS Code, PyCharm) to highlight pairs. Common gotcha: a triple-quoted string that’s missing its closing triple-quote.
Why does my syntax error point to a line that looks correct?
The actual error is often on the line BEFORE the one Python reports. Python reads code until something doesn’t parse, then reports the position where it gave up, not where the user’s mistake started. Check the line above the reported error for missing colons, commas, or closing brackets.
Why does ‘print x’ raise SyntaxError in Python 3?
Python 3 made print a function, so print(x) is required. The bare ‘print x’ syntax was Python 2 only. If you’re following an old tutorial, check whether it targets Python 2 (released 2008) or Python 3 (your current interpreter). Update all print statements to print(…) function calls.
Where can I find more SyntaxError fixes?
Browse the SyntaxError reference hub for 48+ specific fixes (Python and JavaScript). For Python fundamentals see the Python Tutorial hub. For JavaScript syntax errors see the JavaScript Tutorial hub.
Caren Bautista
Technical Writer at PIES IT Solution
Responsible for crafting clear, well-structured, and beginner-friendly content across the platform. Handles the writing, proofreading, and editorial review of tutorials, guides, and documentation to ensure every article is accurate, readable, and easy to follow.
Expertise: Technical Writing · Content Creation · Documentation · Editorial Writing · JavaScript · TypeScript · Python · Python Errors · HTTP Errors · MS Excel · View all posts by Caren Bautista →