What is a python string? Python string definitions and how to escape instances in detail

What is a python string? A person needs a language to negotiate with a computer. stringIs PythonThe most common data types in the. We can use quotation marks ( 'Or ") to create a string, Creating a string is simple, as long as you assign a value to the variable.

For example:

var1 = ' Hello world! ' VAR2 = "www.python.cn"

The definition of a Python string:

Python accesses a value in a string

python does not support single character types, and single-character is also used as a string in Python.
python access substrings, you can use square brackets to intercept strings, as in the following example:

Instance:

#!/usr/bin/python var1 = ' Hello world! ' var2 = "python runoob"  print "var1[0]:", var1[0] print "var2[1:5]:", var2[1: 5]

The result of the above instance execution:

Var1[0]: H
Var2[1:5]: Ytho

Python escape character

Python uses a backslash (\) to escape characters when special characters are needed in characters. As the following table:

Escape character	Describe
\ (at end of line)	Line continuation character
\\	Backslash symbol
\'	Single quotation marks
\"	Double quotes
\a	Bell
\b	BACKSPACE (Backspace)
\e	Escape
\000	Empty
\ n	Line break

#!/usr/bin/python#-*-coding:utf-8-*-a = "Hello" b = "python"  print "A + B output result:", a + B  print "A * 2 output:", A * 2  print "a[1" output: ", a[1]  print" a[1:4 "output:", A[1:4]  if ("H" in a):     print "h in variable a"  else: 
  print "H is not in variable a"  if ("M" Not in a):   print "M is not in variable a"  else:    print "m in variable a" print r \ n "Print R ' \ n '

The results of the above program execution are:

A + B output result: Hellopython
A * 2 output result: Hellohello
A[1] Output Result: E
A[1:4] Output Result: ell
H in Variable A
M not in variable a
\ n
\ n

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