11：Python字符串的魔法属性2

test = 'alex'
v = test[2]  # 索引，下标，获取字符串中的某一个字符
print(v, -1)

test = 'alexsasdf'
v = test[0:3]  # 0=<v<3
print(v, -2)
v1 = test[0:-1]  # 切片
print(v1, -3)
v2 = len(test)
print(v2, -4)
v3 = len("我是中国人")  # len获取当前字符串中由几个字符组成，python2.7里面一个汉字是3个则为15
print(v3, -5)
li = [11, 22, 33, 44, 55, 'asdfg']  # 获取的是以逗号为隔，而不是以字长
v4 = len(li)
print(v4, -6)

test = '我是中国人你是'
count = 0
while count < len(test):
    v = test[count]
    print(v)
    count += 1
print('=========,-7')

for zgr in test:  # for循环和上面的功能是一样的
    print(zgr, -8)

name = 'wohaogaoxing'
age = '25'
info = name + age
print(info)
# 字符串一旦创建，不可修改
# 一旦修改或者拼接，都会造成重新生成字符串

test = '我是中国人你是'
for item in test:
    print(item)
    break

for item in test:
    continue
    print(item)

v=range(100)  #帮助创建连续的数字,通过设置步长来指定不连续
print(v)
for item in v:
    print(item)

v=range(0,100,5)
print(v)
for item in v:
    print(item)

test=input('>>>')
for item in test:
    print(item)

test2=input('>>>')
print(test2)
le=len(test2)
print(le)

r=range(0,le)
for item in r:
    print(item,test2[item])

test=input('>>>')
for item in range (0,len(test)):
    print(item,test[item])