I use this command:

sed -i "10 i \t\t\ttime.sleep(0.1) " /home/test_file

to insert at line 10 a line like: <TAB><TAB><TAB>sleep(0.1)

But I got 

t<TAB><TAB>sleep(0.1)...

Can you tell me how to get this result? thanks

PS. I use this command in an executable bash script.

insert tabs sed command using
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