What does python tuple mean?

Python tuple (tuple) is an immutable sequence. Python tuples are similar to Python list data, both are linear tables. The only difference is that the data stored in a Python tuple cannot be modified by the program. You can think of a tuple as a list that can only read data but not modify it.

#Python’s tuples are similar to lists, except that the elements of the tuple cannot be modified.

Use parentheses for tuples and square brackets for lists.

Tuple creation is very simple, just add elements in brackets and separate them with commas.

The following example:

Example (Python 2.0)

tup1 = ('physics', 'chemistry', 1997, 2000)
tup2 = (1, 2, 3, 4, 5 )
tup3 = "a", "b", "c", "d"

Create an empty tuple

tup1 = ()

When the tuple contains only one element, you need to add a comma

tup1 = (50,)

after the element. Tuples are similar to strings. The subscript index starts from 0 and can be intercepted, combined, etc.

Accessing tuples

Tuples can use subscript indexes to access the values ​​in the tuple, as shown below:

Example (Python 2.0)

#!/usr/bin/python
 
tup1 = ('physics', 'chemistry', 1997, 2000)
tup2 = (1, 2, 3, 4, 5, 6, 7 )
print "tup1[0]: ", tup1[0]
print "tup2[1:5]: ", tup2[1:5]

Output results of the above examples:

tup1[0]:  physics
tup2[1:5]:  (2, 3, 4, 5)

Related recommendations: "Python Tutorial"

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