What are python data types?
Built-in Data TypesIn programming, data type is an important concept. Show
Variables can store data of different types, and different types can do different things. Python has the following data types built-in by default, in these categories:
Getting the Data TypeYou can get the data type of any object by using the ExamplePrint the data type of the variable x: x = 5 Try it Yourself » Setting the Data TypeIn Python, the data type is set when you assign a value to a variable:
Setting the Specific Data TypeIf you want to specify the data type, you can use the following constructor functions:
Test Yourself With ExercisesExercise:The following code example would print the data type of x, what data type would that be? Start the Exercise Data types in PythonEvery value in Python has a datatype. Since everything is an object in Python programming, data types are actually classes and variables are instance (object) of these classes. There are various data types in Python. Some of the important types are listed below. Python NumbersIntegers, floating point numbers and complex numbers fall under
Python numbers category. They are defined as We can use the
Output 5 is of type Integers can be of any length, it is only limited by the memory available. A floating-point number is accurate up to 15 decimal places. Integer and floating points are separated by decimal points. 1 is an integer, 1.0 is a floating-point number. Complex numbers are written in the form,
Notice that the Python ListList is an ordered sequence of items. It is one of the most used datatype in Python and is very flexible. All the items in a list do not need to be of the same type. Declaring a list is pretty straight forward. Items separated by commas are enclosed within brackets
We can use the slicing operator
Output a[2] = 15 a[0:3] = [5, 10, 15] a[5:] = [30, 35, 40] Lists are mutable, meaning, the value of elements of a list can be altered.
Output [1, 2, 4] Python TupleTuple is an ordered sequence of items same as a list. The only difference is that tuples are immutable. Tuples once created cannot be modified. Tuples are used to write-protect data and are usually faster than lists as they cannot change dynamically. It is defined within parentheses
We can use the slicing operator
Output t[1] = program t[0:3] = (5, 'program', (1+3j)) Traceback (most recent call last): File "test.py", line 11, in Python StringsString is sequence of Unicode characters. We can use single quotes or double quotes to
represent strings. Multi-line strings can be denoted using triple quotes,
Output This is a string A multiline string Just like a list and tuple, the slicing operator
Output s[4] = o s[6:11] = world Traceback (most recent call last): File " Python SetSet is an unordered collection of unique items. Set is defined by values
separated by comma inside braces
Output a = {1, 2, 3, 4, 5} We can perform set operations like union, intersection on two sets. Sets have unique values. They eliminate duplicates.
Output {1, 2, 3} Since, set are unordered collection, indexing has no meaning. Hence, the slicing operator
Python DictionaryDictionary is an unordered collection of key-value pairs. It is generally used when we have a huge amount of data. Dictionaries are optimized for retrieving data. We must know the key to retrieve the value. In Python, dictionaries are defined within braces
We use key to retrieve the respective value. But not the other way around.
Output
Conversion between data typesWe can convert between different data types by using different type conversion functions like
Conversion from float to int will truncate the value (make it closer to zero).
Conversion to and from string must contain compatible values.
We can even convert one sequence to another.
To convert to dictionary, each element must be a pair:
What are the 4 data types in Python?Following are the standard or built-in data type of Python:. Numeric.. Sequence Type.. Boolean.. Dictionary.. What are the 5 data types in Python?Python has five standard Data Types:. Numbers.. String.. Tuple.. Dictionary.. What are Python data types give example?Built-in Data Types. How many types of data types are there in Python?Every value in Python has a data type, and every data type is a class that stores a variable (object). In a programming language like Python, there are mainly 4 data types: String – It is a collection of Unicode characters (letters, numbers and symbols) that we see on a keyboard.
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