Details: Code for YOLO DataSet Prep.
Code Generate the YOLO format training dataset from the below format

img_name1,number_instances,x1,y1,x2,y2,lbl,x1,y1,x2,y2,lbl,...
img_name2,number_instances,x1,y1,x2,y2,lbl,x1,y1,x2,y2,lbl,...
img_name3,number_instances,x1,y1,x2,y2,lbl,x1,y1,x2,y2,lbl,...

Where x1,y1 and x2,y2 are upper left and bottom right co-ordinartes, Visual Exmple Below

(x1,y1)............
      .           .
      .           .
      .  Image    .
      .           .
      .............(x2,y2)