i = 100

print(i.bit_length())

'''

                  bit_length

1     0000 0001       1

2     0000 0010       2

3     0000 0011       2

#bool  True False

#int ----> str

i = 1

s = str(i)

#str ---> int

s = ''

i = int(s)

#int ----->bool  只要是0 ----》False  非0就是True

i = 3

b = bool(i)

print(b)

#bool----> int

#True   1

#False  0

'''

ps:

while True:

    pass

while 1: 效率高

    pass

'''

#str --->bool

#s = "" -----> False

#非空字符串都是True

#s = "0" -----> True

# s

# if s:

#     print('你输入的为空，请重新输入')

# else:

#     pass

#字符串的索引与切片

'''

s = 'ABCDLSESRF'

#索引

# s1 = s[0]

# print(s1)

# s2 = s[2]

# print(s2)

# s3 = s[-1]

# print(s3)

# s4 = s[-2]

# print(s4)

# #ABCD   切片 ：顾头不顾尾

# s5 = s[0:4]

# print(s5)

# s6 = s[0:-1]

# print(s6)

# s7 = s[:]

# s8 = s[0:]

# print(s7,s8)

# s9 = s[0:0]

s = 'ABCDLSESRF'  # s[首:尾:步长]

# s10 = s[0:5:2]

# print(s10)

s11 = s[4:0:-1]

print(s11)

s12 = s[3::-1]

print(s12)

s13 = s[3::-2]

print(s13)

s = 'ABCDLSESRF'

s14 = s[-1::-1]

print(s14)

s15 = s[::-1]

print(s15)

'''

#字符串的操作

s = 'alexWUsir'

s1 = s.capitalize()  # 首字母大写

# print(s1)

# 全大写，全小写

s2 = s.upper()

s21 = s.lower()

# print(s2,s21)

'''

s_str= 'acEQ1'

you_input =input('请输入验证码，不区分大小写')

if s_str.upper() == you_input.upper():

    print('输入成功')

else:

    print('请重新输入')

'''

#大小写翻转

# s3 = s.swapcase()

# print(s3)

# 每个隔开(特殊字符或者数字)的单词首字母大写

# s = 'alex*egon-wusir'

# s4 = s.title()

# print(s4)

# s = 'fade,crazy*w4rri0r_songsong node_3'

# s4 = s.title()

# print(s4)

#居中，空白填充

# s = 'alexWUsir'

# s5 = s.center(20,'~')

# print(s5)

# s = 'alex\tsir'

# s6 = s.expandtabs()

# print(s6)

# s = 'alex二哥'

# #公共方法

# l = len(s)

# print(l)

#以什么开头结尾 endswith

# s = 'alexWUsir'

# s7 =s.startswith('alex')

# s71 = s.startswith('e',2,5)

# print(s71)

'''

if s7:

    pass

elif s.startswith('bl'):

    pass

print(s7)

'''

# find 通过元素找索引，找不到返回-1

#

# index通过元素找索引，找不到报错

# s = 'alexWUsir'

# s8 = s.find('A')

# s81 = s.index('A')

# print(s81,type(s8))

#strip rstrip lstrip

# s = 'alexWUsir%'

# s9 = s.strip('%')

# print(s9)

# s = ' *a%lexWUsi* r%'

# s91 = s.strip(' %*')

# print(s91)

# strip 默认删除前后空格

# username = input('请输入名字：').strip()

# if username =='春哥':

#     print('恭喜春哥发财')

# s = 'alexaa wusirl'

# s10 = s.count('al')

# print(s10)

# split   str ---->list

# s = ';alex;wusir;taibai'

# l = s.split('a')

# print(l)

#format的三种玩法 格式化输出

# s = '我叫{}，今年{}，爱好{}，再说一下我叫{}'.format('太白',36,'girl','太白')

# print(s)

# name = input('请输入名字：')

# s = '我叫{0}，今年{1}，爱好{2}，再说一下我叫{0}'.format(name,36,'girl')

# print(s)

# name = input('请输入名字：')

# s = '我叫{name}，今年{age}，爱好{hobby}，再说一下我叫{name}'.format(age=18,name=name,hobby='girl')

# print(s)

# s = '来看待街坊邻居复合大师街坊法好的撒见客户'

# s11 = s.replace('街坊','老王',1)

# print(s11)

# s = 'fhdsklfds'

# for i in s:

#     print(i)

s = 'fdsa苍井空fdsalk'

if '苍井空' in s:

    print('您的评论有敏感词...')