[windows] C:¥dev¥ros2¥local_setup.bat can not find Python36

[sugarsweetrobotics]

I installed ROS2 in Windows10 x64 Pro with Chocolatey v0.10.3.
C:¥dev¥ros2¥local_setup.bat can not find Python.exe because the default folder where the Python36 is installed by choco is different from "C:¥ProgramData¥Chocolatey¥lib¥Python3¥tools¥Python.exe".

I edited line 26 of local_setup.bat like below:

• set "ament_python_executable=C:\ProgramData\chocolatey\lib\python3\tools\python.exe"

• set "ament_python_executable=C:\Python36\python.exe"

Then, I got the correct output of the talker/listener examples.

[mikaelarguedas]

Hi @sugarsweetrobotics,
Thanks for reporting the issue.

Did you install from source or from binaries?

• If from binaries:
  It may be because our windows machines building the binaries need to be updated to use the latest version of chocolatey + python.
• If building from source:
  That may be because you had an older version of chocolatey and python when you built your ROS2 workspace. Since then installed/upgraded your python through chocolatey before sourcing your local_setup.bat

[mikaelarguedas]

Note: the path to python you can set the environment variable AMENT_PYTHON_EXECUTABLE to override whatever Python executable was used at configure/build time

[mikaelarguedas]

duplicate of #360