Single Underscore (_) - Stores the value. >>> 5+4 9 >>> _ 9 >>> _+6 15 >>> _ 15 - Ignore the value. a,_,b=(1,2,3) print(a,b) >>> 1 3 lst=['ab','bc','cd'] for _,i in lst: print(i) >>> b c d a,*_,b=(1,2,3,4,5,6,7) print(a,b) >>> 1 7 Single Pre Underscore( _variable) It is used for internal use. When # filename : test_1.py def func(): print('data') def _private_func(): print('7') #filename : test_2..