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In practice go to GiD top menu Utilities->Tools->Develop->Console Python…
Example:
The next picture shows the IDLE console, in which a Python command sets a variable with the current number of surfaces asked to GiD:
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Note: The use of this console is recommended to interactively try several Python commands.
Note that GiD_ Tcl Commands are exposed in the python interpreter as tcl.GiD_.... . Visit GiD' Customization Manual to learn about GiD Tcl Commands .