The string should be named mystring and should contain the word "hello". The target of this exercise is to create a string, an integer, and a floating point number. Mixing operators between numbers and strings is not supported: # This will not work! Simple operators can be executed on numbers and strings: one = 1Īssignments can be done on more than one variable "simultaneously" on the same line like this a, b = 3, 4 These are beyond the scope of this tutorial, but are covered in the Python documentation. There are additional variations on defining strings that make it easier to include things such as carriage returns, backslashes and Unicode characters. The difference between the two is that using double quotes makes it easy to include apostrophes (whereas these would terminate the string if using single quotes) mystring = "Don't worry about apostrophes" Strings are defined either with a single quote or a double quotes. To define a floating point number, you may use one of the following notations: myfloat = 7.0 To define an integer, use the following syntax: myint = 7 (It also supports complex numbers, which will not be explained in this tutorial). Python supports two types of numbers - integers(whole numbers) and floating point numbers(decimals). This tutorial will go over a few basic types of variables. You do not need to declare variables before using them, or declare their type. To learn more about dictionaries, visit Python Dictionary.Python is completely object oriented, and not "statically typed". However, 'Kathmandu' is the value for the 'Nepal' key, so capital_city throws an error message. Since 'Nepal' is key, capital_city accesses its respective value i.e. Here, we have accessed values using keys from the capital_city dictionary. Print(capital_city) # throws error message Set is defined by values separated by commas inside braces Set is an unordered collection of unique items. To learn more about strings, visit Python Strings. In the above example, we have created string-type variables: name and message with values 'Python' and 'Python for beginners' respectively. String is a sequence of characters represented by either single or double quotes. To learn more about tuples, visit Python Tuples. Similar to lists, we use the index number to access tuple items in Python. Here, product is a tuple with a string value Xbox and integer value 499.99. In Python, we use the parentheses () to store items of a tuple. The only difference is that tuples are immutable. Tuple is an ordered sequence of items same as a list. To learn more about lists, visit Python List. languages - access third item from languages i.e.languages - access first item from languages i.e.In the above example, we have used the index values to access items from the languages list. To access items from a list, we use the index number (0, 1, 2. Here, we have created a list named languages with 3 string values inside it. List is an ordered collection of similar or different types of items separated by commas and enclosed within brackets. 1 + 2j is a complex number, type() returns complex as the class of num3 i.e.2.0 is a floating value, type() returns float as the class of num2 i.e. 5 is an integer value, type() returns int as the class of num1 i.e.We have also used the type() function to know which class a certain variable belongs to. In the above example, we have created three variables named num1, num2 and num3 with values 5, 5.0, and 1+2j respectively. We can use the type() function to know which class a variable or a value belongs to. float - holds floating decimal points and it's accurate up to 15 decimal places.int - holds signed integers of non-limited length.They are defined as int, float and complex classes in Python. Integers, floating-point numbers and complex numbers fall under Python numbers category. In Python, numeric data type is used to hold numeric values. Since everything is an object in Python programming, data types are actually classes and variables are instances(object) of these classes.
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