Python Programming for Beginners: Learn Coding in 7 Days: Crash Course Introduction to Programming | Hands-On Projects and Examples by Reed John

Author:Reed, John [Reed, John]
Language: eng
Format: epub
Published: 2020-06-18T16:00:00+00:00

Let's try to write a function that returns the factorial number of any number passed as a parameter.

>>> def par (x):

if x <2:

return 1

return x*par (x-1)

We pay attention to the string we entered immediately after the function definition: it is the documentation string.

Let's try to type now in IDLE fact followed by the round parenthesis as in the figure:

>>> de fact (n):

“”” This function return factorial number

If n<2:

Return 1

Return n*fact (n -1)

>>> fact (

We can see the help window (the so-called "helper") which is automatically shown to us and which includes the list of parameters necessary for the function.

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