Mutable data types in python

Mutable data types in python

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  Data Types inPython Swipe
• 2.
  Mutable Data Typein Python Mutable Data Types a.List b.Bytes arrays c.Sets d.Dictionaries Note:- Mutable sequences can be changed after creation. Some of Python’s mutable data types are: lists, byte arrays, sets, and dictionaries.
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  As you sawearlier, lists are mutable. Here’s another example using the append() method: a = list(('apple', 'banana', 'clementine')) print(id(a)) a.append('dates') print(id(a)) [Out:] 140372445629448 140372445629448 List
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  Byte arrays representthe mutable version of bytes objects. They expose most of the usual methods of mutable sequences as well as most of the methods of the bytes type. Items are integers in the range [0, 256). b = bytearray(b'python') print(id(b)) b.replace(b'p', b'P') print(id(b)) [Out:] 139963525979808 139963525979808 Byte Arrays
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  Sets Python provides twoset types, set and frozenset. They are unordered collections of immutable objects. c = set((‘San Francisco’, ‘Sydney’, ‘Sapporo’)) print(id(c)) c.pop() print(id(c)) [Out:] 140494031990344 140494031990344 As you can see, sets are indeed mutable. Later, in the Immutable Data Types section, we will see that frozensets are immutable.
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  Represents an unorderedcollection of keys and values. The Dictionary data type is optimized for fast lookup of values. The following methods are available on instances of the Dictionary data type Dictionaries
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  Immutable Data Typein Python. Object Reusability in Python. Stay Tuned with Topics for next Post