When you try to automate anything in this tool, you get the following error message: “undefined symbol: _PyUnicode_DecodeUnicodeEscape“. Don’t be too concerned. This article will assist all readers in resolving the issues they are experiencing with this well-known program.

When Would The Error “undefined symbol: _PyUnicode_DecodeUnicodeEscape” Occur?

You are attempting to import ast3 from typed ast, but you get the following error.

ImportError: /usr/lib/python3/dist-packages/typed_ast/_ast3.cpython-39-x86_64-linux-gnu.so: undefined symbol: _PyUnicode_DecodeUnicodeEscape

In another case, on Python 3.9.8, you are importing the module as installed from PyPI (x86 64 architecture) results in the following exception:

Traceback (most recent call last):

  File "/home/runner/.cache/pre-commit/repo8e93dzwn/py_env-python3/bin/black", line 5, in <module>

    from black import patched_main

  File "/home/runner/.cache/pre-commit/repo8e93dzwn/py_env-python3/lib/python3.9/site-packages/black/__init__.py", line 52, in <module>

    from typed_ast import ast3, ast27

  File "/home/runner/.cache/pre-commit/repo8e93dzwn/py_env-python3/lib/python3.9/site-packages/typed_ast/ast3.py", line 40, in <module>

    from typed_ast import _ast3

ImportError: /home/runner/.cache/pre-commit/repo8e93dzwn/py_env-python3/lib/python3.9/site-packages/typed_ast/_ast3.cpython-39-x86_64-linux-gnu.so: undefined symbol: _PyUnicode_DecodeUnicodeEscape

This error appears to be a bug in Python 3.9.7 and Python 3.9.8.

Top Solutions For “undefined symbol: _PyUnicode_DecodeUnicodeEscape” Error

You can use the syntax described below to resolve this fundamental issue.

Method 1: Upgrade the typed-ast

In your case, the issue was resolved by using the most recent version of typed-ast. You need to use this command.

pip install typed-ast --upgrade

Method 2: Use this code

Using this code is a solution for you to resolve your problem.

diff --git a/ast3/Python/ast.c b/ast3/Python/ast.c

index cfca73f..93da89c 100644

--- a/ast3/Python/ast.c

+++ b/ast3/Python/ast.c

@@ -56,6 +56,8 @@ _PyBytes_DecodeEscape(const char *s,

     return PyBytes_DecodeEscape(s, len, errors, unicode, recode_encoding);

 }

+#endif

+

 PyObject *

 _PyUnicode_DecodeUnicodeEscape(const char *s,

                                Py_ssize_t size,

@@ -66,7 +68,6 @@ _PyUnicode_DecodeUnicodeEscape(const char *s,

     return PyUnicode_DecodeUnicodeEscape(s, size, errors);

 }

-#endif

 static int validate_stmts(asdl_seq *);

 static int validate_exprs(asdl_seq *, expr_context_ty, int);

Now your problem will be solved.

Method 3: Upgrade Black to the most recent version, 21.10b0

Besides two methods presented above, there is another method for you to resolve the error “undefined symbol: _PyUnicode_DecodeUnicodeEscape”.

The original issue is a Python Black pipeline failure.Black is pegged to an outdated version which no longer works with Python 3.9.8, so it fails. Upgrading Black to the most recent version, 21.10b0, is a fantastic solution for you to handle your problem.

Using the most recent typed-ast version >=1.5.0 also seems to be effective.

For instance:  pip install typed-ast --upgrade

Conclusion

In conclusion, the approaches presented above are straightforward solutions to the aforementioned major error: “undefined symbol: _PyUnicode DecodeUnicodeEscape“. Please leave your other questions in the comments section so that our team can look them over. we hope you all have a productive day with your Python tool.

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