tuple in python 3 code example

Example 1: what is a tuple in python

# A tuple is a sequence of immutable Python objects. Tuples are
# sequences, just like lists. The differences between tuples
# and lists are, the tuples cannot be changed unlike lists and
# tuples use parentheses, whereas lists use square brackets.
tup1 = ('physics', 'chemistry', 1997, 2000);
tup2 = "a", "b", "c", "d";

# To access values in tuple, use the square brackets for
# slicing along with the index or indices to obtain value
# available at that index.
tup1[0] # Output: 'physics'

Example 2: tuples in python

t = 12345, 54321, 'hello!'
print(t[0])
# output 12345
print(t)
# output (12345, 54321, 'hello!')
# Tuples may be nested:
u = t, (1, 2, 3, 4, 5)
print(u)
# output ((12345, 54321, 'hello!'), (1, 2, 3, 4, 5))
# Tuples are immutable:
# assigning value of 12345 to 88888
t[0] = 88888
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object does not support item assignment
# but they can contain mutable objects:
v = ([1, 2, 3], [3, 2, 1])
print(v)
# output ([1, 2, 3], [3, 2, 1])

Example 3: py tuple

# Different types of tuples

# Empty tuple
my_tuple = ()
print(my_tuple) # ()

# Tuple having integers
my_tuple = (1, 2, 3)
print(my_tuple) # (1, 2, 3)

# tuple with mixed datatypes
my_tuple = (1, "Hello", 3.4)
print(my_tuple) # (1, 'Hello', 3.4)

# nested tuple
my_tuple = ("mouse", [8, 4, 6], (1, 2, 3))
print(my_tuple) # ('mouse', [8, 4, 6], (1, 2, 3))

Example 4: tuple() python

example = [1, 2, 3, 4]
# Here is a list above! As we both know, lists can change in value
# unlike toples, which are not using [] but () instead and cannot
# change in value, because their values are static.

# list() converts your tuple into a list.
tupleexample = ('a', 'b', 'c')

print(list(tupleexample))

>> ['a', 'b', 'c']

# tuple() does the same thing, but converts your list into a tuple instead.

print(example)

>> [1, 2, 3, 4]

print(tuple(example))

>> (1, 2, 3, 4)