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after struggling for 2 days I found a solution (maybe) defining this method

def get_children_spec(base_type, search_path): (package, name) = genmsg.names.package_resource_name(base_type) tmp_msg_context = genmsg.msg_loader.MsgContext.create_default() spec_temp = genmsg.msg_loader.load_msg_by_type(tmp_msg_context, '%s/%s' %(package, name), search_path)
return spec_temp

I would be curious to know if there is a better solution but for the moment I am happy with this.

after struggling for 2 days I found a solution (maybe) defining this method

def get_children_spec(base_type, search_path):
    (package, name) = genmsg.names.package_resource_name(base_type)
    tmp_msg_context = genmsg.msg_loader.MsgContext.create_default()
    spec_temp = genmsg.msg_loader.load_msg_by_type(tmp_msg_context, '%s/%s' %(package, name), search_path) 
 
    return spec_temp
spec_temp