Data Types in Python | list, tuple and range - Leela Soft Madhu Sir
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Sequence Types:
list
tuple
range
list Data Type:
1.Insertion order is preserved
2. Heterogeneous objects
3.Duplicates are allowed
4.Mutable (modifications are allowed)
Creation of a list object:
1.by using [] #empty list
2.by using [10, 20.8, "Java"]
3.by using list() #empty list
4.by using list(iterable_item)
5.by using list comprehension:
[x for x in iterable]
tuple Data Type:
1.Insertion order is preserved
2.Heterogeneous objects
3.Duplicates are allowed
4.Immutable (modifications are not allowed)
Creation of tuple:
1.by using () #empty tuple
2.by using (10,20,30)
3.by using tuple() #empty tuple
4.by using tuple(iterable_item)
Singleton tuple:
10, or (10,)
x = 10,
type(x)
Accessing:
by using index:
TypeError: 'tuple' object does not support item assignment
range Data Type:
1.Insertion order is preserved
2.Immutable (modifications are not allowed)
Creation of range:
1.range(stop)
2.range(start, stop)
3.range(start, stop, step)
1.range(stop)
x = range(5)
2.range(start, stop)
x = range(1,6)
3.range(start, stop, step)
x = range(1,11,1)
step:
1.by default step is 1 (+ve)
start is lessthan stop
2.if step is -ve
start is greaterthan stop
TypeError: 'range' object does not support item assignment