PYTHON

1.元组的概念和用法

zoo = ('wolf','elephant','penguin')
print ('Number of animals in the zoo is',len(zoo))

new_zoo = ('monkey','dolphin',zoo)
print ('Number of animals in the new zoo is ', len(new_zoo))
print ('All animals in new zoo are', new_zoo)
print ('Animals brought from old zoo are ', new_zoo[2])
print ('Last animal brought from old zoo is ',new_zoo[2][2])

2.百分号取元组数据

age = 22
name = 'Swaroop'

print ('%s is %d years old'%(name,age))
print ('Why is %s playing with that python?' % name)

3.字典的用法

ab = { 'Swaroop' :'Swaroopch@byteofpython.info',
'Larry' :'Larry@wall.org',
'Matsumoto' :'matz@ruby-lang.org',
'Spammer' :'spammer@hotmail.com'
}
print ("Swaroop's address is %s" %ab['Swaroop'])

4.列表用法

shoplist = ['apple' , 'mango' , 'carrot' , 'banana']
print ('Item 0 is ' , shoplist[0])
print ('Item 3 is ' , shoplist[3])
print ('Item -1 is ' , shoplist [-1])

print ('Item 1 to 3 is ', shoplist[1:3])
print ('Item 2 to end is ', shoplist [2:])
print ('Item 1 to -1 is ' , shoplist [1:-1])
print ('Item start to end is ' , shoplist [:])

name = 'swaroop'
print ('characters 1 to 3 is ' , name[1:3])
print ('characters 2 to end is ',name[2:])
print ('characters 1 to -1 is ' , name[1:-1])
print ('characters start to end is',name[:])