One, the standard library string for Python

One, the standard library string for Python

1. View weapons

A

Help (Type ())

name = "Jane"
Print (Type (name))

B

Capitalize ()

Print (Name.capitalize ())

Effect: Jane

C

Center ()

Print (Name.center (50, '-'))

effect :-----------------------Jane-----------------------

D

Count ()

message = "Don ' t touble me"
Print (Message.count ("T"))
Print (Message.count ("T", 0, 7))

Effect: View the number of occurrences of the specified index range, or do not specify a range (do not specify a range from left to right)

E

EndsWith ()

message = "Don ' t touble me"

Print (Message.endswith ("Me"))
Print (Message.endswith ("le", 6, 12))
Print (Message.endswith ("T", 1, 5))

Effect: see if the specified element is the end, true, no false

F

StartsWith ()

Effect: see if the specified element is the start, no false, is true

G

Expandtabs ()

s = "Jane\tjane"
Print (S.expandtabs ())
Print (S.expandtabs (25))

Effect: Converts tab to space, default one tab to 8 spaces

H

Find ()

message = "Hey what's Up, It's been while."

Language = "中文版 Chinese Python c C"

Print (Message.find ("E"))
Print (Message.find ("E", 2, 30))
Print (Message.find ("E", 23, 30))
Print (Language.find ("sh"))
Print (Language.find ("Li", 2, 6))

Effect: View the index value of an element, or view the index value of an element of a specified index range

I

Index ()

Effect: Same as Find (), find () not found will return -1,index () will error

J

Isalnum ()

Effect: To see if a string contains letters and numbers, is true, no false

K

Isalpha ()

Effect: See if it is a letter

L

IsDigit ()

Effect: See if it is a number

M

Islower ()

Istitle ()

Isupper ()

N

Isspace ()

Effect: See if a string consists of spaces

O

Join ()

usr = "Gjlove"
names = [' Jane ', ' Guo ', ' hate ']
Print (Usr.join (names))

Effect: Janegjloveguogjlovehate, Ganso can also

P

Rjust ()

Ljust ()

Effect: ________________jane

Q

Lstrip ()

Rstrip ()

Strip ()

Effect: Remove whitespace, default is a space, or it can be a number

R

Partition ()

Message = "How does you do?"
Print (Message.partition ("Do")

Effect: (' How ', ' does ', ' do ')

S

Replace ()

s = "Hello Jane Hello everybody Hello Nothing"
Print (S.replace (' Hello ', ' Hi ', 3))

Effect: Hi Jane hi everybody hi Nothing

T

Frind ()

message = "Hello Python, hello Java, hello C," Hello C + + "
Name = "Janejanejane"
Print (Message.rfind ("E"))
Print (Name.rfind ("E"))
Print (Name.rfind ("E", 0, 8)) #从右往左查询最后一次出现的 "E"
Print (Name.rfind ("G")) #没有会返回-1

Effect:

36
11
7
-1

U

Rindex ()

V

Rpartition ()

name = "Jane and Jane"
Print (Name.rpartition (' J ')) #从右向左找分成三部分

Effect: (' Jane and ', ' j ', ' ane ')

W

Split ()

Rsplit ()

name = "Jane Lala Rose and Jack"
Print (Name.rsplit ("and")) #从右向左以 "and" cut, Effect [' Jane Lala Rose ', ' Jack ']
usr = "Janejanejane"
Print (Usr.rsplit ("a", 1)) #从右向左以 "A" cut, the rest "a" does not cut.
#split是从左往右切割

Effect:

[' Jane Lala Rose ', ' Jack ']
[' janejanej ', ' ne ']

X

Splitlines ()

Name = "Jane\njane"
Print (Name.splitlines (True)) #以换行符为分割, the argument is True when the newline character \ n is preserved.

Effect: [' jane\n ', ' Jane ']

Y

Swapcase ()

Title ()

Name = "Janee"
Print (Name.swapcase ()) #小写变大写, uppercase to lowercase.
Print (Name.title ())

Effect:

Janee
Janee

Z

Zfill ()

message = "Hey what's up, it's been a while."
Print (len (message))
Print (Message.zfill (35))
Print (Message.zfill) #字符串message长度是33, more than a few to complement how many zeros.

Effect:

00hey What's up, it's been a while.
00000hey What's up, it's been a while.

One, the standard library string for Python