Steps to fix Windows Python Configuration issue manually

[jiuqiant]

If you see an unicode error when building MediaPipe on Windows:

ERROR: An error occurred during the fetch of repository 'local_execution_config_python':
   Traceback (most recent call last):
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl", line 210       
                _get_python_lib(repository_ctx, <1 more arguments>)
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl", line 130, in _get_python_lib
                execute(repository_ctx, <1 more arguments>)
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/remote_config/common.bzl", line 208, in execute
                fail(<1 more arguments>)
Repository command failed
File "<string>", line 1
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

please do the following steps to fix it manually.

Step 1. Open the python_configure.bzl file, in my example the file path is C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl, and edit line 128 to be:

cmd += "system(\"%s script.py\");" % python_bin.replace("\\","/")

Step 2. Rerun the build command. Then, you can go further and see another error "invalid escape sequence".

ERROR
C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD:11:24: invalid escape sequence: \U     
ERROR: C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD:17:24: invalid escape sequence: \U 

Step 3. Open the BUILD file, in my example the file path is C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD, and replace every \ with \\ at line 11 and 17.

Step 4. Continue the build process.

[harsha-main]

I have tried this on ubuntu. This solution doesn't work for me though.

Error:(275, 41) in

ERROR: An error occurred during the fetch of repository 'local_execution_config_python': Traceback (most recent call last):

[jianshuo]

I am pretty sure that the reason is PYTHON_BIN_PATH is not set. You can try to echo it to see if there is a path in it:

echo $PYTHON_BIN_PATH

In the file "python_configure.bzl" mentioned above, it states to use this environment to run python script, and the first import in the whole project happens to be numpy. It complains numpy module is not found because either numpy is not installed (well, it was my case in a brand new computer), or the python interpreter cannot be found. For the later, the solution is very simple:

export PYTHON_BIN_PATH=/usr/bin/python3

If you can run this :

$PYTHON_BIN_PATH -c 'import numpy'

without problem, you should be fine to run this part of the program.

[rahulvenkat]

I am pretty sure that the reason is PYTHON_BIN_PATH is not set. You can try to echo it to see if there is a path in it:

echo $PYTHON_BIN_PATH

In the file "python_configure.bzl" mentioned above, it states to use this environment to run python script, and the first import in the whole project happens to be numpy. It complains numpy module is not found because either numpy is not installed (well, it was my case in a brand new computer), or the python interpreter cannot be found. For the later, the solution is very simple:

export PYTHON_BIN_PATH=/usr/bin/python3

If you can run this :

$PYTHON_BIN_PATH -c 'import numpy'

without problem, you should be fine to run this part of the program.

This worked like a charm! I had to additionally install numpy using "sudo apt-get install python3-numpy"

[Meera0212]

@jiuqiant I am getting same error on windows after edit line 128 to :
cmd += "system(\"%s script.py\");" % python_bin.replace("\\","/")

Before editing this line and after edit this line I am getting same error as below :

Repository rule local_python_configure defined at: C:/users/ambaliya/_bazel_ambaliya/3rnvncgu/external/org_tensorflow/third_party/py/python_configure.bzl:275:41: in <toplevel> ERROR: An error occurred during the fetch of repository 'local_execution_config_python': Traceback (most recent call last): File "C:/users/ambaliya/_bazel_ambaliya/3rnvncgu/external/org_tensorflow/third_party/py/python_configure.bzl", line 208 get_python_bin(repository_ctx) File "C:/users/ambaliya/_bazel_ambaliya/3rnvncgu/external/org_tensorflow/third_party/remote_config/common.bzl", line 44, in get_python_bin which(repository_ctx, "python") File "C:/users/ambaliya/_bazel_ambaliya/3rnvncgu/external/org_tensorflow/third_party/remote_config/common.bzl", line 27, in which execute(repository_ctx, <1 more arguments>) File "C:/users/ambaliya/_bazel_ambaliya/3rnvncgu/external/org_tensorflow/third_party/remote_config/common.bzl", line 208, in execute fail(<1 more arguments>) Repository command failed INFO: Could not find files for the given pattern(s).

There is no BUID file according to your step 3
C:\Users\Ambaliya\_bazel_Ambaliya\3rnvncgu\external\local_execution_config_python

This my build command : bazel build -c opt --host_crosstool_top=@bazel_tools//tools/cpp:toolchain --fat_apk_cpu=arm64-v8a,armeabi-v7a //mediapipe/examples/android/src/java/com/google/mediapipe/apps/aar_example:mp_face_detection_aar

[tonychunxizhu]

I am pretty sure that the reason is PYTHON_BIN_PATH is not set. You can try to echo it to see if there is a path in it:
echo $PYTHON_BIN_PATH
In the file "python_configure.bzl" mentioned above, it states to use this environment to run python script, and the first import in the whole project happens to be numpy. It complains numpy module is not found because either numpy is not installed (well, it was my case in a brand new computer), or the python interpreter cannot be found. For the later, the solution is very simple:
export PYTHON_BIN_PATH=/usr/bin/python3
If you can run this :
$PYTHON_BIN_PATH -c 'import numpy'
without problem, you should be fine to run this part of the program.

This worked like a charm! I had to additionally install numpy using "sudo apt-get install python3-numpy"

Absolutely Works!

[progmars]

Now for me Bazel still failed to launch - at first the checks failed for BIN and then for LIB paths.

I had to do the following ugly hack to disable the checks in python_configure.bzl:

def _check_python_lib(repository_ctx, python_lib):
    """Checks the python lib path."""
    cmd = 'test -d "%s" -a -x "%s"' % (python_lib, python_lib)
    result = raw_exec(repository_ctx, [get_bash_bin(repository_ctx), "-c", cmd])
    # if result.return_code == 1:
    #    auto_config_fail("Invalid python library path: %s" % python_lib)

def _check_python_bin(repository_ctx, python_bin):
    """Checks the python bin path."""
    cmd = '[[ -x "%s" ]] && [[ ! -d "%s" ]]' % (python_bin, python_bin)
    result = raw_exec(repository_ctx, [get_bash_bin(repository_ctx), "-c", cmd])
    # if result.return_code == 1:
    #    auto_config_fail("--define %s='%s' is not executable. Is it the python binary?" % (
    #        PYTHON_BIN_PATH,
    #        python_bin,
    #    ))

And then I ran Bazel with the following command:

bazel build -c opt --define MEDIAPIPE_DISABLE_GPU=1 --action_env PYTHON_BIN_PATH="D:\\Anaconda\\python.exe" --action_env PYTHON_LIB_PATH="D:\\Anaconda\\Lib" mediapipe/examples/desktop/hello_world

Another issue was when attempting to build mediapipe for Python:

UnicodeDecodeError: 'charmap' codec can't decode byte 0x9c in position 5628: character maps to <undefined> -
it turned out, README.md file was fetched as Unicode from the repo, I had to open it and resave as ANSI (most probably, thus getting rid of BOM and any other unknown characters).

Now I'm stuck with the following error, but that might be a different issue:

tensorflow/core/framework/types.proto: File not found.
mediapipe/calculators/tensorflow/image_frame_to_tensor_calculator.proto:20:1: Import "tensorflow/core/framework/types.proto" was not found or had errors.
mediapipe/calculators/tensorflow/image_frame_to_tensor_calculator.proto:30:12: "tensorflow.DataType" is not defined.

[ismetnl]

If you see an unicode error when building MediaPipe on Windows:

ERROR: An error occurred during the fetch of repository 'local_execution_config_python':
   Traceback (most recent call last):
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl", line 210       
                _get_python_lib(repository_ctx, <1 more arguments>)
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl", line 130, in _get_python_lib
                execute(repository_ctx, <1 more arguments>)
        File "C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/remote_config/common.bzl", line 208, in execute
                fail(<1 more arguments>)
Repository command failed
File "<string>", line 1
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

please do the following steps to fix it manually.

Step 1. Open the python_configure.bzl file, in my example the file path is C:/users/username/_bazel_username/zbffnwmd/external/org_tensorflow/third_party/py/python_configure.bzl, and edit line 128 to be:

cmd += "system(\"%s script.py\");" % python_bin.replace("\\","/")

Step 2. Rerun the build command. Then, you can go further and see another error "invalid escape sequence".

ERROR
C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD:11:24: invalid escape sequence: \U     
ERROR: C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD:17:24: invalid escape sequence: \U 

Step 3. Open the BUILD file, in my example the file path is C:/users/username/_bazel_username/zbffnwmd/external/local_execution_config_python/BUILD, and replace every \ with \ at line 11 and 17.

Step 4. Continue the build process.

I finally solved this issue, Thanks.

[KabLov92]

Just in case someone is trying these fixes but still has issues, please check all these:
echo %ANDROID_HOME%
echo %ANDROID_NDK_HOME%
echo %JAVA_HOME%
and check that the opencv build path in your WORKSPACE file is correct

[PriyavartRajain]

Unfortunately, It still does not work for me. I am on windows, and here are the errors:

ERROR: An error occurred during the fetch of repository 'local_execution_config_python':
Traceback (most recent call last):
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/py/python_configure.bzl", line 209, column 22, in _create_local_python_repository
_check_python_bin(repository_ctx, python_bin)
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/py/python_configure.bzl", line 145, column 25, in _check_python_bin
auto_config_fail("--define %s='%s' is not executable. Is it the python binary?" % (
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/remote_config/common.bzl", line 12, column 9, in auto_config_fail
fail("%sConfiguration Error:%s %s\n" % (red, no_color, msg))
Error in fail: Configuration Error: --define PYTHON_BIN_PATH='C://Users//rajai//AppData//Local//Programs//Python//Python37' is not executable. Is it the python binary?
ERROR: Error fetching repository: Traceback (most recent call last):
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/py/python_configure.bzl", line 209, column 22, in _create_local_python_repository
_check_python_bin(repository_ctx, python_bin)
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/py/python_configure.bzl", line 145, column 25, in _check_python_bin
auto_config_fail("--define %s='%s' is not executable. Is it the python binary?" % (
File "C:/users/rajai/_bazel_rajai/y4gtkfyw/external/org_tensorflow/third_party/remote_config/common.bzl", line 12, column 9, in auto_config_fail
fail("%sConfiguration Error:%s %s\n" % (red, no_color, msg))
Error in fail: Configuration Error: --define PYTHON_BIN_PATH='C://Users//rajai//AppData//Local//Programs//Python//Python37' is not executable. Is it the python binary?
DEBUG: Rule 'rules_cc' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "6f2d1911cdd0aaeecac686cfee4ee1ff0d1f3382045e1671551e237fc3cbbb47"
DEBUG: Repository rules_cc instantiated at:
C:/users/rajai/mediapipe_repo/mediapipe/WORKSPACE:36:13: in
Repository rule http_archive defined at:
C:/users/rajai/_bazel_rajai/y4gtkfyw/external/bazel_tools/tools/build_defs/repo/http.bzl:336:31: in
ERROR: Analysis of target '//mediapipe/examples/desktop/hello_world:hello_world' failed; build aborted: Configuration Error: --define PYTHON_BIN_PATH='C://Users//rajai//AppData//Local//Programs//Python//Python37' is not executable. Is it the python binary?
INFO: Elapsed time: 0.481s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded, 0 targets configured)

Could someone please help me out? Thank you!!