python-tuple tuples

The knowledge of the list is actually similar to the array in C, which can be inserted and modified. LIST=[A,B,C,D]

Tuple tuples, once initialized, cannot be modified. Benefits and absolute safety.

Define an empty tuple: t= ()

Define a tuple with only one element: t= (1,), Python will recognize this element by adding a comma after the parenthesis element, or Python will treat t= (1) as the number of elements in the tuple.

Define a tuple with a list: t= (A,b,c,[x,y]), where you can modify the elements of the list in a tuple, such as t[3][0]= ' X ', t[3][1]= ' Y ', which is a tuple t= (A,b,c,[x,y])

python-tuple tuples