python中二元元组的使用
#! /usr/bin/python
# _* _coding:UTF-8 _*_
# the use of 2-tuple
fruit1=("apple","banana")
fruit2=("grape","orange")
tuple1=(fruit1,fruit2)
print tuple1
print tuple1[0][1]
print tuple1[1][1]
print "################################################################################"
# the package and unpackage
tuple3=("apple","banana","grape","orange")
a,b,c,d=tuple3
print a,b,c,d
print "################################################################################"
#traverse the tuple
tuple4=(("apple","banana"),("grape","orange"),("watermelon",),("grapefulit",))
for i in range(len(tuple4)):
print "tuple[%d]:" %i,"",
for j in range(len(tuple4[i])):
print tuple4[i][j],"",
print
print "################################################################################"
# map()
tuple5=(("apple","banana"),("grape","orange"),("watermelon",),("grapefulit",))
k=0
for a in map(None,tuple5) :
print "tuple[%d]:" %k,"",
for x in a :
print x,"",
print
k+=1
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