Pandas无法加载数据，csv编码神秘

Question

我正在尝试将一个数据集加载到pandas中，但无法通过步骤1。我是新来的，请原谅，如果这是显而易见的，我已经搜索了以前的主题，没有找到答案。数据大多是汉字，这可能是问题所在。在

.csv非常大，可以在这里找到：http://weiboscope.jmsc.hku.hk/datazip/ 我在试第一周。在

在下面的代码中，我确定了我尝试的3种解码类型，包括尝试查看使用了什么编码

import pandas
import chardet
import os


#this is what I tried to start
    data = pandas.read_csv('week1.csv', encoding="utf-8")

    #spits out error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0x9a in position 69: invalid start byte

#Code to check encoding -- this spits out ascii
bytes = min(32, os.path.getsize('week1.csv'))
raw = open('week1.csv', 'rb').read(bytes)
chardet.detect(raw)

#so i tried this! it also fails, which isn't that surprising since i don't know how you'd do chinese chars in ascii anyway
data = pandas.read_csv('week1.csv', encoding="ascii")

#spits out error: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 0: ordinal not in range(128)

#for god knows what reason this allows me to load data into pandas, but definitely not correct encoding because when I print out first 5 lines its gibberish instead of Chinese chars
data = pandas.read_csv('week1.csv', encoding="latin1")

任何帮助将不胜感激！在

编辑：@Kristof提供的答案确实有效，正如我的一位同事昨天编制的程序一样：

^{pr2}$

我还想为未来的搜索者补充这是2012年的微博开放数据。在

Answer 1

输入文件似乎有点不对劲。始终存在编码错误。在

你可以做的一件事是将CSV文件作为二进制文件读取，解码二进制字符串并替换错误的字符。在

示例（source表示块读取代码）：

in_filename = 'week1.csv'
out_filename = 'repaired.csv'

from functools import partial
chunksize = 100*1024*1024 # read 100MB at a time

# Decode with UTF-8 and replace errors with "?"
with open(in_filename, 'rb') as in_file:
    with open(out_filename, 'w') as out_file:
        for byte_fragment in iter(partial(in_file.read, chunksize), b''):
            out_file.write(byte_fragment.decode(encoding='utf_8', errors='replace'))

# Now read the repaired file into a dataframe
import pandas as pd
df = pd.read_csv(out_filename)

df.shape
>> (4790108, 11)

df.head()