Off topic:gff file name replace!

Question

[fufuyou]

Hi, This is my gff file. I want to change some names. I tried to write a code, but it does not work well. The file is :

Contig11434     EVM     gene    148504  151454  .       +       .       ID=SGH012586-RA;Name=Contig11434.9;
Contig11434     EVM     mRNA    148504  151454  .       +       .       ID=SGH012586-RA;Parent=SGH012586-RA;Name=Contig11434.9;
Contig11434     EVM     exon    148504  148731  .       +       .       ID=Contig11434.9.1;Parent=SGH012586-RA;
Contig11434     EVM     CDS     148504  148731  .       +       0       ID=SGH012586-RA;Parent=SGH012586-RA;
Contig11434     EVM     exon    149332  149538  .       +       .       ID=Contig11434.9.2;Parent=SGH012586-RA;

I want to get the modified file is:

Contig11434     EVM     gene    148504  151454  .       +       .       ID=SGH012586-RA;Name=SGH012586-RA;
Contig11434     EVM     mRNA    148504  151454  .       +       .       ID=SGH012586-RA;Parent=SGH012586-RA;Name=SGH012586-RA;
Contig11434     EVM     exon    148504  148731  .       +       .       ID=SGH012586-RA.1;Parent=SGH012586-RA;
Contig11434     EVM     CDS     148504  148731  .       +       0       ID=SGH012586-RA;Parent=SGH012586-RA;
Contig11434     EVM     exon    149332  149538  .       +       .       ID=SGH012586-RA.2;Parent=SGH012586-RA;