元祖變成字符串 || 字符串中替換部分字符串 || enumberate能夠找到字符串，列表，元祖的的索引和值 || zip的用法 || 判斷變量的類型

 

 元祖變成字符串採用這種方式：

 

 字符串中替換部分字符串

from string import Template

s = Template('hello,${name} how are you,this is ${point},welcome to you')
d = s.substitute(name = 'tom',point = 'beijing')
print d
輸出：hello,tom how are you,this is beijing,welcome to you

#enumberate能夠找到字符串，列表，元祖的的索引和值
f = 'helloworld'
for i,t in enumerate(f):
    if(i == 3):
        print t
輸出：索引3對應的值是： l

a = ['aa','bb','cc','dd']
for i,t in enumerate(a):
    if(t == 'bb'):
        print 'bb的索引是：',i
輸出：bb的索引是： 1

c = ('ee','ff','gg','hh')
for i,t in enumerate(c):
    if('gg'==t):
        print 'gg的索引是：',i

輸出：gg的索引是： 2

zip(arg0,arg1)

s ,t = 'hellotom','world'
print zip(s,t)
輸出：[('h', 'w'), ('e', 'o'), ('l', 'r'), ('l', 'l'), ('o', 'd')]

sss = ['aaa','bbb','ccc','ddd']
ppp = ['ggg','hhh','iii','kkk','jjj']
print zip(sss,ppp)
輸出：[('aaa', 'ggg'), ('bbb', 'hhh'), ('ccc', 'iii'), ('ddd', 'kkk')]

ss = ('tt','yy','uu','ii')
pp = ('11','22','33','44','55','66')
print zip(pp,ss)
輸出：[('11', 'tt'), ('22', 'yy'), ('33', 'uu'), ('44', 'ii')]

它只匹配對應的，成對輸出，剩下的不輸出

返回的都是固定格式的，返回元祖組成的列表，這是肯定的格式。

數組，字符串，元祖他們相互之間是能夠用zip()的:

s4 = ('acv','bdv','eger')
p4 = ['ag','sfd','asf','sf']
print zip(s4,p4)
輸出：[('acv', 'ag'), ('bdv', 'sfd'), ('eger', 'asf')]

s5 = 'helloworld'
p5 = ['aa','bb','ee','ff']
print zip(s5,p5)
輸出：[('h', 'aa'), ('e', 'bb'), ('l', 'ee'), ('l', 'ff')]

s6 = 'perfectOne'
p6 = ('eee','yyy','uuu','www','lll')
print zip(s6,p6)
輸出：[('p', 'eee'), ('e', 'yyy'), ('r', 'uuu'), ('f', 'www'), ('e', 'lll')]

判斷變量的類型：isinstance('abc',str)

print isinstance('abc',str)
輸出：True
print type('abc')
輸出：<type 'str'> python中的string是str