查看文件编码 + 查看文件扩展名 + 文件编码转换

参考资料：python中的encode()和decode()函数

unicode编码转换

查看文件编码 + 查看文件扩展名

import os
import sys
import codecs
import chardet

def GetFileEncodingFormat(file):
    fileHandle  = open(file, 'r', errors = 'ignore')
    fileContext = fileHandle.read()
    return chardet.detect(fileContext.encode())["encoding"]

def GetFileExtension(file):
    (filepath, filename) = os.path.split(file)
    (shortname, extension) = os.path.splitext(filename)
    return extension

def CovertFileCodeFormat(file, out_encode):
    try:
        encoding = GetFileEncodingFormat(file)
        extension = GetFileExtension(file)
        if (encoding != out_encode and (extension == '.c' or extension == '.h')):
            fileHandle  = codecs.open(file, 'r', encoding, errors = 'ignore')
            fileContext =  fileHandle.read()
            codecs.open(file, 'w', out_encode,  errors = 'ignore').write(fileContext)
            print ("convert:" + file + " sucess")
    except IOError as err:
        print ("I/O error: {0}".format(err))
        

def ProcessDir(path):
    for root, dirs, files in os.walk(path):
        for file in files:
            filePath = os.path.join(root, file)
            CovertFileCodeFormat(filePath, sys.argv[2])

def main():
    path = sys.argv[1]
    if (os.path.isfile(path)):
        CovertFileCodeFormat(path, sys.argv[2])
    elif (os.path.isdir(path)):
        ProcessDir(path)
    else:
        pass

　　查看文件编码+扩展名

filepath = r'C:\Users\Administrator\Desktop\njhcfx_1205\zjtpymplan_1204.csv'
GetFileEncodingFormat(filepath)
GetFileExtension(filepath)

def ProcessDir(path):
    for root, dirs, files in os.walk(path):
        for file in files:
            filePath = os.path.join(root, file)
            #CovertFileCodeFormat(filePath, sys.argv[2])
            print(GetFileEncodingFormat(filePath))

def main():
    path = sys.argv[1]
    if (os.path.isfile(path)):
        #CovertFileCodeFormat(path, sys.argv[2])
        pass
    elif (os.path.isdir(path)):
        ProcessDir(path)
    else:
        pass

　　文件编码转换

def GB18030ToUTF8(path, new_path, chunksize):
    for root, dirs, files in os.walk(path):
        for file in files:
            #if file not in ('zjtpjl_1204.csv'):
            #    continue
            filePath = os.path.join(root, file)
            #print(filePath, '\n', GetFileEncodingFormat(filepath))
            chunks = pd.read_csv(filePath, chunksize=chunksize, encoding='gb18030', 
                             engine='python', dtype=str, na_values='')
            filePath = os.path.join(new_path, file)
            flag = 1
            for chunk in chunks:
                if flag==1:
                    chunk.to_csv(filePath, encoding='utf_8_sig', index=False, header=True)
                    flag = 0
                else:
                    chunk.to_csv(filePath, encoding='utf_8_sig', mode='a+', index=False, header=False) #

#测试
chunksize = 1000000
path = r'C:\Users\Administrator\Desktop\njhcfx_1205'
GB18030ToUTF8(path, path+'1', chunksize)

#测试转换后文件是否可读
#filepath = r'C:\Users\Administrator\Desktop\njhcfx_12051\zjtpjl_1204.csv'
#aa = pd.read_csv(filepath, encoding='utf_8_sig', dtype=str)

　　

#content = open(filepath).read().decode("gb18030")
#open("C:\\Users\\Administrator\\Desktop\\njhcfx_1205\\zjtpymplan_1205.txt","w").write(content.encode("utf8"))