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What is Python Function? | Learn Python Functions in 1 minute
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What is Python Function?
Python function is a block of organized, reusable code that is used to perform a single and related action. Functions provide better modularity for your application and a high degree of code reusing. Python gives you many built-in functions like print(), etc. but you can also create your own functions. These functions are called user-defined functions. You can define functions to provide the required functionality.
There are some rules to define a function
1. Function blocks begin with the keyword def followed by the function name and parentheses.
2. Any input parameters or arguments should be placed within these parentheses.
3. The first statement of a function can be an optional statement.
4. The code block within every function starts with a colon (:) and is indented.
5. The statement return [expression] exits a function, optionally passing back an expression to the caller. A return statement with no arguments is the same as return None.
You can all call a function from another function or directly from the Python prompt.
Note - All parameters in a function in the Python language are passed by reference. It means if you change what a parameter refers to within a function, the change also reflects back in the calling function.
You can call a function by using the following types of formal arguments
1. Required arguments - Required arguments are the arguments passed to a function in correct positional order. Here, the number of arguments in the function call should match exactly with the function definition.
2. Keyword arguments - Keyword arguments are related to the function calls. When you use keyword arguments in a function call, the caller identifies the arguments by the parameter name.
3. Default arguments - A default argument is an argument that assumes a default value if a value is not provided in the function call for that argument.
4. Variable-length arguments - You may need to process a function for more arguments than you specified while defining the function. These arguments are called variable-length arguments and are not named in the function definition, unlike required and default arguments.
Anonymous function is not declared in the standard manner by using the def keyword. You can use the lambda keyword to create small anonymous functions.
#python #function #pythonfunction
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Python function is a block of organized, reusable code that is used to perform a single and related action. Functions provide better modularity for your application and a high degree of code reusing. Python gives you many built-in functions like print(), etc. but you can also create your own functions. These functions are called user-defined functions. You can define functions to provide the required functionality.
There are some rules to define a function
1. Function blocks begin with the keyword def followed by the function name and parentheses.
2. Any input parameters or arguments should be placed within these parentheses.
3. The first statement of a function can be an optional statement.
4. The code block within every function starts with a colon (:) and is indented.
5. The statement return [expression] exits a function, optionally passing back an expression to the caller. A return statement with no arguments is the same as return None.
You can all call a function from another function or directly from the Python prompt.
Note - All parameters in a function in the Python language are passed by reference. It means if you change what a parameter refers to within a function, the change also reflects back in the calling function.
You can call a function by using the following types of formal arguments
1. Required arguments - Required arguments are the arguments passed to a function in correct positional order. Here, the number of arguments in the function call should match exactly with the function definition.
2. Keyword arguments - Keyword arguments are related to the function calls. When you use keyword arguments in a function call, the caller identifies the arguments by the parameter name.
3. Default arguments - A default argument is an argument that assumes a default value if a value is not provided in the function call for that argument.
4. Variable-length arguments - You may need to process a function for more arguments than you specified while defining the function. These arguments are called variable-length arguments and are not named in the function definition, unlike required and default arguments.
Anonymous function is not declared in the standard manner by using the def keyword. You can use the lambda keyword to create small anonymous functions.
#python #function #pythonfunction
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** ABOUT OUR CHANNEL **
CodeOneDigest is a youtube channel for the videos on programming language, cloud and docker container technology in English and Hindi languages.
Dosto, CodeOneDigest youtube channel pe aapko programming languages, container technology, cloud computing, software engineering se related videos milenge.
Check out our channel here:
Don’t forget to subscribe!
** OUR WEBSITE **
** GET IN TOUCH **
FOLLOW US ON SOCIAL - LIKE, SHARE & SUBSCRIBE
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