Shapefile to gmt (python)

ok thanks for your explainations (I guess I need to learn on the different format, how they work…)

I’m having a problem using your solution…

FAILURE:
Unable to open datasource Failles.gmt' with the following drivers. -> JP2ECW’
-> OCI' -> SOSI’
-> PCIDSK' -> netCDF’
-> PDS4' -> JP2OpenJPEG’
-> PDF' -> MBTiles’
-> EEDA' -> DB2ODBC’
-> ESRI Shapefile' -> MapInfo File’
-> UK .NTF' -> OGR_SDTS’
-> S57' -> DGN’
-> OGR_VRT' -> REC’
-> Memory' -> BNA’
-> CSV' -> NAS’
-> GML' -> GPX’
-> LIBKML' -> KML’
-> GeoJSON' -> GeoJSONSeq’
-> ESRIJSON' -> TopoJSON’
-> Interlis 1' -> Interlis 2’
-> OGR_GMT' -> GPKG’
-> SQLite' -> ODBC’
-> WAsP' -> PGeo’
-> MSSQLSpatial' -> OGR_OGDI’
-> PostgreSQL' -> MySQL’
-> OpenFileGDB' -> XPlane’
-> DXF' -> CAD’
-> Geoconcept' -> GeoRSS’
-> GPSTrackMaker' -> VFK’
-> PGDUMP' -> OSM’
-> GPSBabel' -> SUA’
-> OpenAir' -> OGR_PDS’
-> WFS' -> WFS3’
-> HTF' -> AeronavFAA’
-> Geomedia' -> EDIGEO’
-> GFT' -> SVG’
-> CouchDB' -> Cloudant’
-> Idrisi' -> ARCGEN’
-> SEGUKOOA' -> SEGY’
-> XLS' -> ODS’
-> XLSX' -> ElasticSearch’
-> Walk' -> Carto’
-> AmigoCloud' -> SXF’
-> Selafin' -> JML’
-> PLSCENES' -> CSW’
-> VDV' -> GMLAS’
-> MVT' -> TIGER’
-> AVCBin' -> AVCE00’
-> NGW' -> HTTP’

Do you think there is a problem with my shapefile?