Functions in Python: Introduction
Python
| Beginner
- 17 videos | 2h 3m 6s
- Includes Assessment
- Earns a Badge
Explore how Python facilitates code reuse by using functions in this 17-video course, which shows learners how to define functions, learn passing arguments to functions, and returning values from functions. The functions you will examine change the state of the program, may have side effects, and have observable effects other than their return values. Since functions with side effects are hard to parallelize and use in a distributed environment, you will learn correct ways of returning values from functions. First, you will learn how to invoke functions by using both positional and keyword arguments. You will next work with positional input arguments in custom functions, and learn that these are required arguments, and how to order these arguments to invoke your function. You will next learn to use variable length arguments in defining custom functions. Finally, you will learn how keyword arguments or named arguments are a way to make the intent behind function invocation absolutely explicit, and help prevent bugs in programs that are especially hard to detect.
WHAT YOU WILL LEARN
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Discover the key concepts covered in this course
Recall and implement custom functions
Define, invoke, and name functions
Recall how functions work as objects
Define and invoke functions with input arguments
Reference global variables from within a function
Recall the characteristics of working with positional arguments
Return information from functions
Write functions with multiple return statements -
Return complex data types from functions
Specify keyword arguments while invoking functions
Recall nuances in invoking functions using keyword arguments
Specify default values for function arguments
Implement functions with *args variable length positional arguments
Combine positional and variable length arguments
Implement functions with **kwargs variable length keyword arguments
Recall characteristics of functions, input arguments, and return values
IN THIS COURSE
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2m 1s
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7m 52sAfter completing this video, you will be able to recall and use custom functions. FREE ACCESS
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3. Working with Functions4m 39sFind out how to define, invoke, and name functions. FREE ACCESS
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4. Functions as Objects7m 17s
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5. Input Arguments - Invoking Functions7m 11sLearn how to define and invoke functions with input arguments. FREE ACCESS
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6. Input Arguments - Referencing Global Variables9m 29sTo reference global variables from within a function, use the "global" keyword. FREE ACCESS
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7. Input Arguments - Using Positional Arguments8m 26sUpon completion of this video, you will be able to recall the characteristics of working with positional arguments. FREE ACCESS
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8. Return Values - Functions8m 34sIn this video, find out how to get information back from functions. FREE ACCESS
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9. Return Values - Multi-return Statements7m 9sLearn how to write functions with multiple return values. FREE ACCESS
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10. Return Values - Complex Data Types9m 42sIn this video, learn how to return complex data types from functions. FREE ACCESS
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11. Keyword Arguments - Invoking Functions8m 37sAfter completing this video, you will be able to specify keyword arguments when invoking functions. FREE ACCESS
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12. Keyword Arguments - Nuances5m 56sUpon completion of this video, you will be able to recall nuances in invoking functions using keyword arguments. FREE ACCESS
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13. Default Arguments9m 23sAfter completing this video, you will be able to specify default values for function arguments. FREE ACCESS
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14. Variable Length Arguments - *args Variable7m 44sIn this video, you will learn how to implement functions with variable length positional arguments. FREE ACCESS
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15. Variable Length Arguments - Combinations6m 36sIn this video, you will learn how to combine positional and keyword arguments. FREE ACCESS
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16. Variable Length Arguments - **kwargs Keyword5m 56sFind out how to implement functions with variable length keyword arguments. FREE ACCESS
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17. Exercise: Introduction to Functions in Python6m 34sAfter completing this video, you will be able to recall characteristics of functions, input arguments, and return values. FREE ACCESS
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