python的学习日志<二>

#list的add remove update find

#update
x = [1,1,1]
x[2]=2
print(x) 

#remove
#删除则不需要赋值
names = ['alice','beth','ceecil','dee-dee','earl']
del names[2]
print(names)

#分片赋值

name = list('Perl')
print(name)

name[2:]=list('ar')
print(name)

#一次多个元素

name = list('Perl')
name[1:] = list('ython')
print(name)

# 分片
tag = '<a href="http://www.pythan.org">Pythan web site </a>'
print(tag[9:30])
print(tag[32:-4])

number = [1,2,3,4,5,6,7,8,9,10]
print(number[3:6])
print(number[0:1])

print(number[-3:])  #当需要末尾边界值时, 边界值自动相对应补充
print(number[:3]) #这种方法同样适用于序列开始的元素

# Python的”苦力“
 # 列表和元组

#发现在3.3.5版本上面,函数的使用很重要
number = [100,34,678]
l=len(number)
m=max(number)
print(l)
print(m)