关于csv：UnicodeDecodeError：’charmap’编解码器无法解码位置7240中的字节0x8d：字符映射到＆lt; undefined＆gt;

UnicodeDecodeError: 'charmap' codec can't decode byte 0x8d in position 7240: character maps to <undefined>

我是做硕士论文的学生。作为论文的一部分，我正在与Python合作。我正在读取一个.csv格式的日志文件，并将提取的数据以格式良好的方式写入另一个.csv文件。但是，当读取文件时，我会收到以下错误：

Traceback (most recent call last): File
"C:\Users\SGADI\workspace\DAB_Trace\my_code\trace_parcer.py", line 19,
in for row in reader:

File"C:\Users\SGADI\Desktop\Python-32bit-3.4.3.2\python-3.4.3\lib\encodings\cp1252.py",
line 23, in decode return codecs.charmap_decode(input,self.errors,decoding_table)[0]

UnicodeDecodeError: 'charmap' codec can't decode byte 0x8d in position 7240: character maps to

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import csv
import re
#import matplotlib
#import matplotlib.pyplot as plt
import datetime
#import pandas
#from dateutil.parser import parse
#def parse_csv_file():
timestamp = datetime.datetime.strptime('00:00:00.000', '%H:%M:%S.%f')
timestamp_list = []
snr_list = []
freq_list = []
rssi_list = []
dab_present_list = []
counter = 0
f = open("output.txt","w")
with open('test_log_20150325_gps.csv') as csvfile:
reader = csv.reader(csvfile, delimiter=';')
for row in reader:
#timestamp = datetime.datetime.strptime(row[0], '%M:%S.%f')
#timestamp.split("",1)

timestamp = row[0]
timestamp_list.append(timestamp)

#timestamp = row[0]
details = row[-1]
counter += 1
print (counter)
#if(counter > 25000):
# break
#timestamp = datetime.datetime.strptime(row[0], '%M:%S.%f')

#timestamp_list.append(float(timestamp))

#search for SNRLevel=\d+
snr = re.findall('SNRLevel=(\d+)', details)
if snr == []:
snr = 0
else:
snr = snr[0]
snr_list.append(int(snr))

#search for Frequency=09ABC
freq = re.findall('Frequency=([0-9a-fA-F]+)', details)
if freq == []:
freq = 0
else:
freq = int(freq[0], 16)
freq_list.append(int(freq))

#search for RSSI=\d+
rssi = re.findall('RSSI=(\d+)', details)
if rssi == []:
rssi = 0
else:
rssi = rssi[0]
rssi_list.append(int(rssi))

#search for DABSignalPresent=\d+
dab_present = re.findall('DABSignalPresent=(\d+)', details)
if dab_present== []:
dab_present = 0
else:
dab_present = dab_present[0]
dab_present_list.append(int(dab_present))

f.write(str(timestamp) +"\t")
f.write(str(freq) +"\t")
f.write(str(snr) +"\t")
f.write(str(rssi) +"\t")
f.write(str(dab_present) +"
")
print (timestamp, freq, snr, rssi, dab_present)

#print (index+1)

#print(timestamp,freq,snr)
#print (counter)
#print(timestamp_list,freq_list,snr_list,rssi_list)

'''if snr != []:
if freq != []:
timestamp_list.append(timestamp)
snr_list.append(snr)
freq_list.append(freq)
f.write(str(timestamp_list) +"\t")
f.write(str(freq_list) +"\t")
f.write(str(snr_list) +"
")

print(timestamp_list,freq_list,snr_list)'''
f.close()

我找了那个特别的角色，但没有找到。我在互联网上搜索了建议更改格式的内容：我尝试了UT8、Latin1和其他一些格式，但我仍然收到了这个错误。你能帮我解决一下怎么用pandas解决吗？我也试过使用pandas，但我还是得到了错误。我甚至删除了日志文件中的一行，但错误发生在下一行。

请帮我找到解决办法，谢谢。