10/4/2019 Python Variable Abspielen
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 falls under category. They are defined as int, float and complex class in Python.We can use the type function to know which class a variable or a value belongs to and the isinstance function to check if an object belongs to a particular class. A = 5print(a, 'is of type', type(a))a = 2.0print(a, 'is of type', type(a))a = 1+2jprint(a, 'is complex number?'
, isinstance(1+2j,complex))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 integer, 1.0 is floating point number.Complex numbers are written in the form, x + yj, where x is the real part and y is the imaginary part. Here are some examples. a = 123456789 a123456789 b = 0.123456789 b0.1234568 c = 1+2j c(1+2j)Notice that the float variable b got truncated.Python Listis 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.
A = 5,10,15,20,25,30,35,40# a2 = 15print('a2 = ', a2)# a0:3 = 5, 10, 15print('a0:3 = ', a0:3)# a5: = 30, 35, 40print('a5: = ', a5:)Lists are mutable, meaning, value of elements of a list can be altered. a = 1,2,3 a2=4 a1, 2, 4Python Tupleis an ordered sequence of items same as 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 list as it cannot change dynamically.It is defined within parentheses where items are separated by commas. t = (5,'program', 1+3j)We can use the slicing operator to extract items but we cannot change its value.
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Jul 11, 2016 Play a Sound with Python duplicate Ask Question 97. This question already has an answer here: Play audio with Python 18 answers What's the easiest way to play a sound file (.wav) in Python? By easiest I mean both most platform independent and requiring the least dependencies. Pygame is certainly an option, but it seems overkill for just. Variables and Types. Python is completely object oriented, and not 'statically typed'. You do not need to declare variables before using them, or declare their type. Every variable in Python is an object. This tutorial will go over a few basic types of variables. Python supports two types of numbers - integers and floating point numbers.
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