python3-string manipulation

# Auther:aaron Fan

Name = "My \tname is {name}, and age was {age}."

‘‘‘
Print (Name.capitalize ()) #这段话的首字母大写
Print (Name.count ("a")) #统计这段字符串中一共有多少个a
Print (Name.casefold ())
Print (Name.center, "-") #一共打印50个字符, put the original string in the middle, both sides not enough with "-" to fill up
Print (Name.encode ()) #把字符串转换成二进制
Print (Name.endswith ("an")) #判断一个字符串以什么结尾, for example, returns True if ending with an, otherwise false
Print (Name.startswith (' my ')) #判断字符串是否以my开头
Print (Name.expandtabs ()) #把字符串中的tab转换成多个空格, converted to 30 spaces
Print (Name.expandtabs (tabsize=30)) #把字符串中的tab转换成多个空格, converted to 30 spaces
Print (Name.find ("name")) #返回字符串中第一个name的下标, the following example one of the slice usages
Print (Name[name.find ("Aaron"):])
‘‘‘
Print (Name.format (age=26,name= "Aaron Fan")) #format的具体用法在day1的interaction交互与字符串格式. Py There are examples in that script
Print ({' Age ': Name.format_map, ' name ': ' Aaron Fan ') #以字典的形式传送, the result is the same as format
Print ("123aBc". Isalnum ()) #判断字符串中是不是同时包含字母和数字, returns True if both letters and numbers are included, and no other spaces and any special characters are included.
Print ("Aaronfan". Isalpha ()) #判断字符串中是不是只有英文字母 returns True if there are only English letters and no other numbers, spaces, and any special characters.
Print ("123". Isdecimal ()) #判断是否为十进制
Print ("123". IsDigit ()) #判断是否为整数, this is used more, in the shopping cart that script has the use of examples, you can go to see
Print ("test123". Isidentifier ()) #判断是否为一个合法的变量名
Print ("123". IsNumeric ()) #判断是否只包含数字
Print ("\ t \ t". Isspace ()) #判断是否为空格
Print ("Aaron Fan". Istitle ()) #判断首字母是否全部为大写
Print (Name.isprintable ()) #判断这个东西是否可以打印, use it and check it out in detail.
Print ("AARON FAN". Isupper ()) #判断是否全部大写
#join的用法
List1 = ["1", "2", "3", "4", "5"]
Print ("+". Join (List1))

Print (Name.ljust, "*") #打印100个字符串, not enough words to the right of all with the specified characters to fill, here with *
Print (Name.rjust ("*")) #左边用 * Fill
Print ("Aaron FAn". Lower ()) #把大写变成小写
Print ("Aaron FAn". Upper ()) #把小写变成大写
Print (Name.lstrip ()) #去除左边的换行
Print (Name.rstrip ()) #去除右边的换行
Print (Name.strip ()) #去除两边的换行
#print (Name.maketrans ())
#print (Name.translate ())
#maketrans和translate加一起可以用来创建一个随机密码, with a rule of your own definition, check it out in detail.
Print ("Aaron Fan". Replace ("n", "n", 1)) #替换字符串中的指定字符, the example here is to replace one of the n, make it n, replace the value 1, or you can replace multiple
Print ("Aaron Fan". RFind ("n")) #从左网友数, find the subscript of the rightmost value
Print ("Aaron+fan". Split ("+")) #把字符串按照指定字符分成一个列表, by default separated by a space into a list
Print ("Aaron\nfan". Splitlines ()) #按照换行符, split the string into a list
Print ("Aaorn Fan". Swapcase ()) #把大写转小写, lowercase to uppercase
Print (Name.title ()) #所有单词的首字母都大写
Print ("123". Zfill ()) #不够100个数字, fill the front with zeros

#打印当前python使用的编码模式
Import Sys
Print (sys.getdefaultencoding ())

python3-string manipulation