Python function (def)

function (Def)

function is to give a program a name, use the name to execute a program, repeated use.

Keyword ' def ' to define, identifier (parameter)

Examples of function use:

1.

Def boy ():

Print ("Hi,world")

The above function is relatively simple, run this function, just print out the Hi,world

2.

Def boy (A, b):

C=a+b

Return C

Above this function, after running, if given two values, that is, the two values are added, and the return value

3.

Def boy (Str,times):

C=str * Times

Return C

Above this function, given a string, and a number, that is, returning the corresponding number

4.

def boy (str, times= 1):

C=str * Times

Return C

Above this function, there is a default value of 1, if there is no value to the function, he defaults to output 1 times

5.

Def boy (a,b=2,c=9)

Print (A,B,C)

Boy (111,21)

Boy (54,c=8)

Boy (k)

Run the above function to define multiple default values

Python function (def)