获取变量类型：

print type(42)print type(4.2)print type('spam')if(type(1) == type(2.0)):  print "equal"else:  print "not equal"

 

list：

start_list = [5, 888, 1, 2, 4]square_list = [] print len(start_list) # number of items start_list.remove(888) # remove an item by value

del start_list[0] # remove an item by index

for num in start_list:　　square_list.append(num*num) # append to tailsquare_list.sort() # alphabetic orderprint square_list

 

dictionary:

zoo_animals = { 'Unicorn' : 'Cotton Candy House','Sloth' : 'Rainforest Exhibit','Bengal Tiger' : 'Jungle House','Atlantic Puffin' : 'Arctic Exhibit','Rockhopper Penguin' : 'Arctic Exhibit'}idel zoo_animals['Unicorn'] # remove an itemzoo_animals['Rockhopper Penguin'] = 'anything'  # change an itemprint zoo_animalsfor one_key  in zoo_animals:    print zoo_animals[one_key]

 

# dictionary can hold many different types of valuesinventory = {    'gold' : 500,    'pouch' : ['flint', 'twine', 'gemstone'], # Assigned a new list to 'pouch' key    'backpack' : ['xylophone','dagger', 'bedroll','bread loaf']}# add a key called 'packet', and set the value of this key to be a listinventory['pocket'] = ['seashell', 'strange berry', 'lint']# sort the listinventory['backpack'].sort()# remove an item from the list stored under the 'backpack' keyinventory['backpack'].remove('dagger')# add 50 to the number stored under the 'gold' keyinventory['gold'] = inventory['gold']+50

 

 引入模块：

(1)  import math  // recommended wayprint math.sqrt(4)(2) from math import sqrt // recommended wayprint sqrt(4)(3) from math import * // NOT recommended wayprint sqrt(4)

函数定义和调用：

def cube(number):    return number**3def by_three(number):    if(number%3 == 0):        return cube(number)    else:        return Falseprint by_three(3)