我正在尝试读取包含一些不规则行的大型csv。我一直在收到错误，说明“期待113个字符，遇到114个字符”。我已经尝试丢弃大于预期分隔字符数的行，但后来遇到了另一个错误。代码和错误如下所示：
import pandas as pd
import csv
f_name = 'some_file.txt'
with open(f_name,'r') as file:
lines = file.readlines()
bad_lines= []
for i,line in enumerate(lines):
if line.count('\t') != 112:
bad_lines.append(i)
df = pd.read_csv(f_name,header=0,sep='\t',skiprows=bad_lines,error_bad_lines=False)
df.head()
这会产生以下警告和错误：
Skipping line 3332366: expected 113 fields, saw 168
Skipping line 3829308: expected 113 fields, saw 114
Skipping line 4819090: expected 113 fields, saw 114
Skipping line 4832856: expected 113 fields, saw 114
Skipping line 5170065: expected 113 fields, saw 114
Skipping line 5198811: expected 113 fields, saw 168
---------------------------------------------------------------------------
UnicodeDecodeError Traceback (most recent call last)
<ipython-input-19-ea2fca7ce11a> in <module>()
1 df = pd.read_csv(f_name,header=0,sep='\t',skiprows=bad_lines,error_bad_lines=False)
----> 2 df.head()
/Library/Python/2.7/site-packages/IPython/core/displayhook.pyc in __call__(self, result)
236 self.write_format_data(format_dict, md_dict)
237 self.log_output(format_dict)
--> 238 self.finish_displayhook()
239
240 def cull_cache(self):
/Library/Python/2.7/site-packages/IPython/kernel/zmq/displayhook.pyc in finish_displayhook(self)
70 sys.stderr.flush()
71 if self.msg['content']['data']:
---> 72 self.session.send(self.pub_socket, self.msg, ident=self.topic)
73 self.msg = None
74
/Library/Python/2.7/site-packages/IPython/kernel/zmq/session.pyc in send(self, stream, msg_or_type, content, parent, ident, buffers, track, header, metadata)
647 if self.adapt_version:
648 msg = adapt(msg, self.adapt_version)
--> 649 to_send = self.serialize(msg, ident)
650 to_send.extend(buffers)
651 longest = max([ len(s) for s in to_send ])
/Library/Python/2.7/site-packages/IPython/kernel/zmq/session.pyc in serialize(self, msg, ident)
551 content = self.none
552 elif isinstance(content, dict):
--> 553 content = self.pack(content)
554 elif isinstance(content, bytes):
555 # content is already packed, as in a relayed message
/Library/Python/2.7/site-packages/IPython/kernel/zmq/session.pyc in <lambda>(obj)
83 # disallow nan, because it's not actually valid JSON
84 json_packer = lambda obj: jsonapi.dumps(obj, default=date_default,
---> 85 ensure_ascii=False, allow_nan=False,
86 )
87 json_unpacker = lambda s: jsonapi.loads(s)
/Library/Python/2.7/site-packages/zmq/utils/jsonapi.pyc in dumps(o, **kwargs)
38 kwargs['separators'] = (',', ':')
39
---> 40 s = jsonmod.dumps(o, **kwargs)
41
42 if isinstance(s, unicode):
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.pyc in dumps(obj, skipkeys, ensure_ascii, check_circular, allow_nan, cls, indent, separators, encoding, default, sort_keys, **kw)
248 check_circular=check_circular, allow_nan=allow_nan, indent=indent,
249 separators=separators, encoding=encoding, default=default,
--> 250 sort_keys=sort_keys, **kw).encode(obj)
251
252
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.pyc in encode(self, o)
208 if not isinstance(chunks, (list, tuple)):
209 chunks = list(chunks)
--> 210 return ''.join(chunks)
211
212 def iterencode(self, o, _one_shot=False):
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 4: ordinal not in range(128)
我本来期望我的预防措施已经删除了这些内容，但我也不完全了解如何解决编码问题。奇怪的角色完全有可能进入数据，但我没有处理编码问题的经验，而且我无法适应我在网上找到的任何其他解决方案。
提前感谢您的帮助！