Detailed introduction to python strings

Python has five major data types, which are: Use the type built-in function to view the data type

1: str (string) 2: int (integer) 3: float (floating point number)

3: list (list) 4: dict (dictionary) 5: set (set)

str (string) is an immutable type: the value corresponding to each variable is actually only in memory Associating data with variable names, when the value of B is modified, it is actually just opening up a new space in the memory, pointing B to the newly opened space, and does not directly change the data in the memory space that B originally pointed to: as shown in the figure

Python has many built-in methods for each data type. Flexible use of these methods can greatly reduce the amount of our code. Below I list the methods of strings for everyone. Some common methods:

str.replace()                                                                                                                                                                                                                                       // String replacement

##str.strip('/')                           

str.split()                                                                                                                                                                                                                                                                               ​ 

##str.startswith()                                                                                                                                                                                                                                                               ​Change the string to lowercase

##str.upper()                                           ’’’’’  

#'Specify splicing symbol'.join(str) //String splicing

String slice:

## characters String splicing:

There are many built-in methods for strings, but these are the most commonly used ones. I hope it will be helpful to all my friends.

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