python第三方模块之chardet

安装

pip install chardet

pip 安装比较慢，可以参考 https://www.cnblogs.com/yunhgu/p/14749066.html 修改源就很很快了

如何使用

#! /usr/bin/env python
# -*- coding: utf-8 -*-#

# -------------------------------------------------------------------------------
# Name:         demo
# Author:       yunhgu
# Date:         2021/6/30 9:57
# Description:
# -------------------------------------------------------------------------------
import chardet
import time
from chardet.universaldetector import UniversalDetector
from functools import wraps


def timethis(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        start = time.process_time()
        r = func(*args, **kwargs)
        end = time.process_time()
        print('{}.{} : {}'.format(func.__module__, func.__name__, end - start))
        return r

    return wrapper


@timethis
def get_encoding(path):
    # 创建一个检测对象
    detector = UniversalDetector()
    with open(path, "rb") as f:
        for line in f.readlines():
            # 分块进行测试，直到达到阈值
            detector.feed(line)
            if detector.done:
                break
    # 关闭检测对象
    detector.close()
    # 输出检测结果
    encoding = detector.result["encoding"]
    print(f"encoding : {encoding}")


@timethis
def get_encoding2(path):
    with open(path, "rb") as f:
        encoding = chardet.detect(f.read())["encoding"]
        print(f"encoding : {encoding}")


if __name__ == '__main__':
    path = "42W-中文版(1).csv"
    get_encoding(path)
    get_encoding2(path)