python how to determine Chinese character encoding

Dear, in Python, we can use the built-in function ord() to find a character of unicode encoding bureau Celery. The ord() function converts the incoming character into a corresponding Unicode code point, returning an integer value that represents the beginning of the codepoint. Here are the basic steps to find the character Unicode encoding using the ord() function:

1.The first thing you need to do is select the characters you want to encode and store them in a string variable. 2.

The string variable is called using the ord() function and passed in as a function parameter. 3.The ord() function returns the decimal integer value corresponding to the character, i.e. the Unicode encoding.

4.The return value can be assigned to an integer variable for later use. Here's an example:

Define a string variable char = a"Find the unicode encoding of character A, Unicode value = ord(char), and output the result print("The unicode of a is encoded as:", Unicode value) After running the above **, the output result is as follows: The Unicode encoding of A is:

The judgment is as follows:

1. Use ord() to judge the ASCII code one character by one: a - z : 97 - 122, a - z : 65 - 90.

2、def is_english_char(ch)：if ord(ch) not in (97,122) and ord(ch) not in (65,90)：return false，return true。

Python is designed with a clear and consistent style, which makes Python a widely used language that is easy to read, easy to maintain, and popular with a large number of users.

Use ord() to determine the ASCII code on a character-by-character basis.

a - z : 97 - 122

a - z : 65 - 90

def is_english_char(ch):

if ord(ch) not in (97,122) and ord(ch) not in (65,90):

return false

return true

The above function can be used to distinguish whether a character is an English character or not.

It can be distinguished by coding.

In Python 2 the default encoding is ASCII, while in Python 3 the default encoding is Unicode.

def is_chinese(s):

if s >= u'\u4e00' and s<=u'\u9fa5':

return true

else:return false

To give you this function of judging Chinese characters, you can use it on a string.

1.Enter a string, randomly generate s, I don't know what this random means, I have to encrypt it. 2.

The following is simple, convert the input string into a list, and then use in to determine whether the entered x is in the s list, and remove it with the list method remove It's not particularly difficult!

The regular matching method is more rigorous, is there any restriction on the number you are talking about?

Here are some commonly used regular expressions for judging various numbers:

Verify number: [0-9]*$

Verify the n-digit number: d$

Verify at least n digits: d$

Verify the number of m-n digits: d$

Verify numbers starting with zero and non-zero: (0|.)[1-9][0-9]*) verify that there are two decimal places for positive real numbers: [0-9]+(

0-9])?Verify positive real numbers with 1-3 decimal places: [0-9]+(

0-9])?Verify non-zero positive integers:

1-9][0-9]*$Verify non-zero negative integers: 1-9][0-9]*$Verify non-negative integers (positive integers + 0) d+$Verify non-positive integers (negative integers + 0) d+)|0+)) After that, use the Python RE module to match the regex and write a small example:

import re

p1='^[0-9]*$')

number =

if number:

print "yes"

else:print "no"

Python Coding Summary:

1).First of all, Python has two formats of strings, str and unicode, where unicode is equivalent to bytecode and can be used across platforms.

str can be converted to imitation unicode in three ways: unicode(), u, and .

Unicode is converted to str, if there is Chinese, generally through encode.

2).If there is Chinese in **, we will generally add it"# coding=utf-8", what is the function of this, generally as follows:

If there are Chinese comments in **, you need a more advanced device (such as my emacs) to declare this as the format of the ** file according to the header declaration. The program will pass.

Head declaration, decoding and initialization u "Life is short", such a unicode object, (so the storage format of the head declaration and the hall banquet ** should be consistent.)

So, when we fill in the headers, we use s="Chinese"In fact, type(s) is a str, which has encoded unicode into str in UTF-8 format.

Secondly, if we use s=u in **'Chinese', which is equivalent to decoding str to Unicode in UTF-8.

It is recommended to study the Python Tutorial.