How to Write Python strings?

We need to learn a lot about using Python strings. In fact, no matter what the environment is, you need to master the relevant string application. Next, let's take a look at how Python strings are written.

 
 

  
  
# Coding: UTF-8
  
  
# String operations
  
  
# Use brackets [] to extract any consecutive characters from a string
  
  
# Note: The expression in brackets is a string index, which indicates the position of a character in the string,
  
  
# The index of the first character of the string in the brackets is 0, not 1
  
  
# Len returns the length of the string
  
  
Test_string = "1234567890"
  
  
Print test_string [0] # result = 1
  
  
Print test_string [1] # result = 2
  
  
Print test_string [9] # result = 0
  
  
Print len (test_string) # result = 10
  
  
# Use for loop to traverse strings
  
  
For I in test_string:
  
  
Print I
  
  
If (I = '5 '):
  
  
Print "Aha, I find it! "
  
  
Print type (I) # <type 'str'> 20
  
  
# Extract part of a string
  
  
# The operator [n: m] returns part of the string. Starts from the nth string and ends with the nth string.
  
  
# Contains n, but not m.
  
  
# If n is ignored, the returned string starts from index 0.
  
  
# If m is ignored, the string starts from n and ends with the last string.
  
  
Test_string = 'abcdefghijklmnopqrstuvwxy'
  
  
Print test_string [0: 5] # result = 'abcde'
  
  
Print test_string [8: 11] # result = 'ijk'
  
  
Print test_string [: 6] # result = 'abcdef'
  
  
Print test_string [20:] # result = 'uvwxyz'
  
  
Print test_string [:] # result = 'abcdefghijklmnopqrstuvwxy'
 
 

The above is an introduction to the code used by Python strings.