coursera_intro_to_python_notebook

this is my first mini python project

1 function&&more operations

function starts with key word "def",such as an example

def compute_area(base,height):

area= ( 1 /2 ) * base * height;

return area

the end of the header is a colon,means the following lines indented belongs to the function,no matther how many lines, but with the same amount

so,the block indented with a same amount belongs to the function

in last case , it has 2 lines(with the same amount indented).

when you stop the indentation , the block of code is done

Call the function

a1 = compute_area(3,8)

print a1

#print 12

def print_hello():

print "hello world"

Call the function

print_hello()

#OK

a=print_hello()

print a;

#will print "None"

if you forget or you dont need a return statement,it automatically add one

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more operations

a="0"

b="1"

print a,b,":00"

#show "0 1 :00"

+operator

combine the strings

print a+b+":00"

#show "01:00"

function str: convert something to string

such as

hour=3

print str(hour)

import module:

such as

improt math

improt simplegui

print math.pi

improt random