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The Python version is retrieved by executing a small python script. If, for any reason, script fails to execute, leave the `PYTHON_VERSION_*` variables undefined instead of assuming version 1.4. Fixes: #18799
08dee696
The Python version is retrieved by executing a small python script. If, for any reason, script fails to execute, leave the `PYTHON_VERSION_*` variables undefined instead of assuming version 1.4. Fixes: #18799