how to use tupels 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'

# An empty tuple 
empty_tuple = () 
# Another for doing the same 
tup = ('python', 'geeks') 
# Access first element
print (tup[0]) 

tupel = ('banana',10,True)
print(tupel[2])

x = ("apple", "banana", "cherry")
y = list(x)
y[1] = "kiwi"
x = tuple(y)

print(x)

#It's like a list, but unchangeable
tup = ("var1","var2","var3")
tup = (1,2,3)
#Error