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The terms parameter and argument can be used for the same thing: information that are passed into a function. From a function's perspective: A parameter is the variable listed inside the parentheses in the function definition. An argument is the value that is sent to the function when it is called.
Python has a set of built-in functions. Function. Description. abs () Returns the absolute value of a number. all () Returns True if all items in an iterable object are true. any () Returns True if any item in an iterable object is true.
A lambda function is a small anonymous function. A lambda function can take any number of arguments, but can only have one expression.
The map() function executes a specified function for each item in an iterable. The item is sent to the function as a parameter.
RegEx Functions. The re module offers a set of functions that allows us to search a string for a match: Function. Description. findall. Returns a list containing all matches. search. Returns a Match object if there is a match anywhere in the string. split.
The find() method finds the first occurrence of the specified value. The find() method returns -1 if the value is not found. The find() method is almost the same as the index() method, the only difference is that the index() method raises an exception if the value is not found. (See example below)
A variable created inside a function belongs to the local scope of that function, and can only be used inside that function.
The terms parameter and argument can be used for the same thing: information that are passed into a function. From a function's perspective: A parameter is the variable listed inside the parentheses in the function definition. An argument is the value that are sent to the function when it is called.
To understand the meaning of classes we have to understand the built-in __init__() function. All classes have a function called __init__(), which is always executed when the class is being initiated. Use the __init__() function to assign values to object properties, or other operations that are necessary to do when the object is being created:
Example. Addition + and subtraction - has the same precedence, and therefor we evaluate the expression from left to right: Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
