Tuples belonging immutable sequence, can not modify the elements of the tuple. Therefore, no increase in the tuple elements, modifying elements, the elements related to the deletion method.
Create a tuple
1. Create tuples (). Parentheses can be omitted.
a = (10,20,30) or a = 10,20,30
2. () Create tuple tuple (iterator object may be) by tuple example:
b = tuple () # Create an empty tuple objects b = tuple ( "abc")
b = tuple(range(3))
Summary: tuple () may receive a list of strings, other types of sequence, iteration, etc. generated tuples. list () may receive a tuple string, other types of sequences, generating a list iterators.