49 lines
2.0 KiB
Markdown
49 lines
2.0 KiB
Markdown
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Python code for FlightGear “meta” work
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======================================
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The `flightgear` directory contains FlightGear-specific Python 3 modules.
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These modules are mostly of interest to FlightGear developers.
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Telling your Python interpreter how to access the modules
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---------------------------------------------------------
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In order to run most of the Python scripts in FGMeta, your Python 3
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installation must have the `/path/to/fgmeta/python3-flightgear` directory in
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its `sys.path`. One way to do this is to use something like the following in
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your shell setup:
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export PYTHONPATH="/path/to/fgmeta/python3-flightgear"
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This example uses Bourne-style syntax; adjust for your particular shell.
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Several directories may be added this way using a colon separator on Unix, and
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presumably a semicolon on Windows.
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An alternative to setting `PYTHONPATH` is to add .pth files in special
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directories of your Python installation(s). For instance, you can create a
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file, say, `FlightGear-FGMeta.pth`, containing a single line (with no space at
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the beginning):
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/path/to/fgmeta/python3-flightgear
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If you want the modules present in `/path/to/fgmeta/python3-flightgear` to be
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accessible to a particular Python interpreter (say, a Python 3.8), simply put
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the `.pth` file in `/path/to/python-install-dir/lib/python3.8/site-packages/`.
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This can even be a virtual environment if you want. For the system Python
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interpreters on Debian, you can put the `.pth` file in, e.g,
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`/usr/local/lib/python3.8/dist-packages/`. Note that you may add more lines to
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a `.pth` file in case you want to add other paths to the Python interpreter's
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`sys.path`.
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The scripts
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-----------
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Once you've done the above setup, the Python 3 scripts in FGMeta should run
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fine. This concerns in particular scripts located in the following top-level
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directories of FGMeta:
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catalog Generation of aircraft catalogs
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i18n Management of translations in FlightGear (i18n stands for
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“internationalization”)
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