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User interaction and design

A user's Python code may be loaded from Python extension module is a JAR file or directory which must contain a plain text file META-INF/snappy.def which lists all Python extensions contained in the module. Python extension modules are found in the following locations:

• <module-jar-file>   the a module JAR file
• ${user.home}/.snap/snappy/ext/*    the directories in directory snappy/ext in the SNAP user directory
• ${snap.snappy.ext}   from the directory paths given in the special system property property snap.snappy.ext

A Python extension module must contain a plain text file META-INF/snappy.def which lists all Python extensions contained in the module. In this file, a line are either empty, is a comment line The text file snappy.def contains either empty lines, comment lines starting with the '#' character, or is a line lines declaring a Python extension as follows:

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[<ext-rel-path>/]

<ext>.py   contains the Python extension ExtClassName  

<ext>-info.xml   contains the operator metadata such as processing parameter definitions (for GPF operators only)

Questions

Below is a list of questions to be addressed as a result of this requirements document:

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